Merge tag 'spi-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This has been a fairly quiet release for SPI, though it is likely that
  the next release will have some big changes as there's some
  preparatory work for multiple chip select support gone in - the rest
  of the code is on the list but will need to be rebased onto -rc1.
  Otherwise there's a couple of new tunables for chip select timings,
  some new devices and smaller device specific updates and fixes.

   - Support for configuring the hold and minimum inactive times for
     chip selects.

   - Beginnings of support for supporting devices which have multiple
     chip selects on a single device.

   - Support for newer Broadcom HSSPI and Intel controllers, Silicon
     Labs EM3581 and SI3210"

* tag 'spi-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (67 commits)
  spi: dt-bindings: qcom,spi-qcom-qspi: document OPP and power-domains
  spi: spidev: drop the incorrect notice from Kconfig
  spi: bcm63xx-hsspi: fix error code in probe
  spi: bcmbca-hsspi: Fix error code in probe() function
  spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one()
  spi: intel: Check number of chip selects after reading the descriptor
  spi: xilinx: add force_irq for QSPI mode
  spi: spi-st-ssc: convert to DT schema
  spi: Reorder fields in 'struct spi_transfer'
  spi: cadence-quadspi: use STIG mode for small reads
  spi: cadence-quadspi: setup ADDR Bits in cmd reads
  spi: cadence-quadspi: Add flag for direct mode writes
  spi: cadence-quadspi: Reset CMD_CTRL Reg on cmd r/w completion
  MAINTAINERS: Remove file reference for Broadcom Broadband SoC HS SPI driver entry
  spi: bcm63xx-hsspi: bcmbca-hsspi: fix _be16 type usage
  MAINTAINERS: Add entry for Broadcom Broadband SoC HS SPI drivers
  spi: bcmbca-hsspi: Add driver for newer HSSPI controller
  spi: bcm63xx-hsspi: Disable spi mem dual io read op support
  spi: spi-mem: Allow controller supporting mem_ops without exec_op
  spi: bcm63xx-hsspi: Add prepend mode support
  ...

Documentation/devicetree/bindings/spi/allwinner,sun4i-a10-spi.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Allwinner A10 SPI Controller
 
 allOf:
-  - $ref: "spi-controller.yaml"
+  - $ref: spi-controller.yaml
 
 maintainers:
   - Chen-Yu Tsai <wens@csie.org>

Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Allwinner A31 SPI Controller
 
 allOf:
-  - $ref: "spi-controller.yaml"
+  - $ref: spi-controller.yaml
 
 maintainers:
   - Chen-Yu Tsai <wens@csie.org>

Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml

@@ -2,8 +2,8 @@
 # Copyright 2019 BayLibre, SAS
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/spi/amlogic,meson-gx-spicc.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/spi/amlogic,meson-gx-spicc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Amlogic Meson SPI Communication Controller
 
@@ -41,7 +41,7 @@ properties:
     maxItems: 2
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
   - if:
       properties:
         compatible:
@@ -100,17 +100,17 @@ unevaluatedProperties: false
 examples:
   - |
     spi@c1108d80 {
-          compatible = "amlogic,meson-gx-spicc";
-          reg = <0xc1108d80 0x80>;
-          interrupts = <112>;
-          clocks = <&clk81>;
-          clock-names = "core";
-          #address-cells = <1>;
-          #size-cells = <0>;
-
-          display@0 {
-              compatible = "lg,lg4573";
-              spi-max-frequency = <1000000>;
-              reg = <0>;
-          };
+        compatible = "amlogic,meson-gx-spicc";
+        reg = <0xc1108d80 0x80>;
+        interrupts = <112>;
+        clocks = <&clk81>;
+        clock-names = "core";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        display@0 {
+            compatible = "lg,lg4573";
+            spi-max-frequency = <1000000>;
+            reg = <0>;
+        };
     };

Documentation/devicetree/bindings/spi/amlogic,meson6-spifc.yaml

@@ -2,8 +2,8 @@
 # Copyright 2019 BayLibre, SAS
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/spi/amlogic,meson6-spifc.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/spi/amlogic,meson6-spifc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Amlogic Meson SPI Flash Controller
 
@@ -11,7 +11,7 @@ maintainers:
   - Neil Armstrong <neil.armstrong@linaro.org>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 description: |
   The Meson SPIFC is a controller optimized for communication with SPI
@@ -40,15 +40,15 @@ unevaluatedProperties: false
 examples:
   - |
     spi@c1108c80 {
-          compatible = "amlogic,meson6-spifc";
-          reg = <0xc1108c80 0x80>;
-          clocks = <&clk81>;
-          #address-cells = <1>;
-          #size-cells = <0>;
-
-          flash: flash@0 {
-              compatible = "spansion,m25p80", "jedec,spi-nor";
-              reg = <0>;
-              spi-max-frequency = <40000000>;
-          };
+        compatible = "amlogic,meson6-spifc";
+        reg = <0xc1108c80 0x80>;
+        clocks = <&clk81>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash: flash@0 {
+            compatible = "spansion,m25p80", "jedec,spi-nor";
+            reg = <0>;
+            spi-max-frequency = <40000000>;
+        };
     };

Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml

@@ -15,7 +15,7 @@ description: |
   SPI) of the AST2400, AST2500 and AST2600 SOCs.
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:
@@ -60,23 +60,23 @@ examples:
         interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
 
         flash@0 {
-                reg = < 0 >;
-                compatible = "jedec,spi-nor";
-                spi-max-frequency = <50000000>;
-                spi-rx-bus-width = <2>;
+            reg = < 0 >;
+            compatible = "jedec,spi-nor";
+            spi-max-frequency = <50000000>;
+            spi-rx-bus-width = <2>;
         };
 
         flash@1 {
-                reg = < 1 >;
-                compatible = "jedec,spi-nor";
-                spi-max-frequency = <50000000>;
-                spi-rx-bus-width = <2>;
+            reg = < 1 >;
+            compatible = "jedec,spi-nor";
+            spi-max-frequency = <50000000>;
+            spi-rx-bus-width = <2>;
         };
 
         flash@2 {
-                reg = < 2 >;
-                compatible = "jedec,spi-nor";
-                spi-max-frequency = <50000000>;
-                spi-rx-bus-width = <2>;
+            reg = < 2 >;
+            compatible = "jedec,spi-nor";
+            spi-max-frequency = <50000000>;
+            spi-rx-bus-width = <2>;
         };
     };

Documentation/devicetree/bindings/spi/brcm,bcm63xx-hsspi.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/brcm,bcm63xx-hsspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom Broadband SoC High Speed SPI controller
+
+maintainers:
+  - William Zhang <william.zhang@broadcom.com>
+  - Kursad Oney <kursad.oney@broadcom.com>
+  - Jonas Gorski <jonas.gorski@gmail.com>
+
+description: |
+  Broadcom Broadband SoC supports High Speed SPI master controller since the
+  early MIPS based chips such as BCM6328 and BCM63268.  This initial rev 1.0
+  controller was carried over to recent ARM based chips, such as BCM63138,
+  BCM4908 and BCM6858. The old MIPS based chip should continue to use the
+  brcm,bcm6328-hsspi compatible string. The recent ARM based chip is required to
+  use the brcm,bcmbca-hsspi-v1.0 as part of its compatible string list as
+  defined below to match the specific chip along with ip revision info.
+
+  This rev 1.0 controller has a limitation that can not keep the chip select line
+  active between the SPI transfers within the same SPI message. This can
+  terminate the transaction to some SPI devices prematurely. The issue can be
+  worked around by either the controller's prepend mode or using the dummy chip
+  select workaround. Driver automatically picks the suitable mode based on
+  transfer type so it is transparent to the user.
+
+  The newer SoCs such as BCM6756, BCM4912 and BCM6855 include an updated SPI
+  controller rev 1.1 that add the capability to allow the driver to control chip
+  select explicitly. This solves the issue in the old controller.
+
+properties:
+  compatible:
+    oneOf:
+      - const: brcm,bcm6328-hsspi
+      - items:
+          - enum:
+              - brcm,bcm47622-hsspi
+              - brcm,bcm4908-hsspi
+              - brcm,bcm63138-hsspi
+              - brcm,bcm63146-hsspi
+              - brcm,bcm63148-hsspi
+              - brcm,bcm63158-hsspi
+              - brcm,bcm63178-hsspi
+              - brcm,bcm6846-hsspi
+              - brcm,bcm6856-hsspi
+              - brcm,bcm6858-hsspi
+              - brcm,bcm6878-hsspi
+          - const: brcm,bcmbca-hsspi-v1.0
+      - items:
+          - enum:
+              - brcm,bcm4912-hsspi
+              - brcm,bcm6756-hsspi
+              - brcm,bcm6813-hsspi
+              - brcm,bcm6855-hsspi
+          - const: brcm,bcmbca-hsspi-v1.1
+
+  reg:
+    items:
+      - description: main registers
+      - description: miscellaneous control registers
+    minItems: 1
+
+  reg-names:
+    items:
+      - const: hsspi
+      - const: spim-ctrl
+    minItems: 1
+
+  clocks:
+    items:
+      - description: SPI master reference clock
+      - description: SPI master pll clock
+
+  clock-names:
+    items:
+      - const: hsspi
+      - const: pll
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+allOf:
+  - $ref: spi-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - brcm,bcm6328-hsspi
+              - brcm,bcmbca-hsspi-v1.0
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        reg-names:
+          maxItems: 1
+    else:
+      properties:
+        reg:
+          minItems: 2
+          maxItems: 2
+        reg-names:
+          minItems: 2
+          maxItems: 2
+      required:
+        - reg-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    spi@ff801000 {
+        compatible = "brcm,bcm6756-hsspi", "brcm,bcmbca-hsspi-v1.1";
+        reg = <0xff801000 0x1000>,
+              <0xff802610 0x4>;
+        reg-names = "hsspi", "spim-ctrl";
+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&hsspi>, <&hsspi_pll>;
+        clock-names = "hsspi", "pll";
+        num-cs = <8>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+    };

Documentation/devicetree/bindings/spi/brcm,spi-bcm-qspi.yaml

@@ -99,98 +99,98 @@ required:
 examples:
   - | # BRCMSTB SoC: SPI Master (MSPI+BSPI) for SPI-NOR access
     spi@f03e3400 {
-            compatible = "brcm,spi-brcmstb-qspi", "brcm,spi-bcm-qspi";
-            reg = <0xf03e3400 0x188>, <0xf03e3200 0x50>, <0xf03e0920 0x4>;
-            reg-names = "mspi", "bspi", "cs_reg";
-            interrupts = <0x5>, <0x6>, <0x1>, <0x2>, <0x3>, <0x4>, <0x0>;
-            interrupt-parent = <&gic>;
-            interrupt-names = "mspi_done",
-                              "mspi_halted",
-                              "spi_lr_fullness_reached",
-                              "spi_lr_session_aborted",
-                              "spi_lr_impatient",
-                              "spi_lr_session_done",
-                              "spi_lr_overread";
-            clocks = <&hif_spi>;
-            #address-cells = <0x1>;
-            #size-cells = <0x0>;
-
-            flash@0 {
-                    #size-cells = <0x2>;
-                    #address-cells = <0x2>;
-                    compatible = "m25p80";
-                    reg = <0x0>;
-                    spi-max-frequency = <0x2625a00>;
-                    spi-cpol;
-                    spi-cpha;
-            };
+        compatible = "brcm,spi-brcmstb-qspi", "brcm,spi-bcm-qspi";
+        reg = <0xf03e3400 0x188>, <0xf03e3200 0x50>, <0xf03e0920 0x4>;
+        reg-names = "mspi", "bspi", "cs_reg";
+        interrupts = <0x5>, <0x6>, <0x1>, <0x2>, <0x3>, <0x4>, <0x0>;
+        interrupt-parent = <&gic>;
+        interrupt-names = "mspi_done",
+                          "mspi_halted",
+                          "spi_lr_fullness_reached",
+                          "spi_lr_session_aborted",
+                          "spi_lr_impatient",
+                          "spi_lr_session_done",
+                          "spi_lr_overread";
+        clocks = <&hif_spi>;
+        #address-cells = <0x1>;
+        #size-cells = <0x0>;
+
+        flash@0 {
+            #size-cells = <0x2>;
+            #address-cells = <0x2>;
+            compatible = "m25p80";
+            reg = <0x0>;
+            spi-max-frequency = <0x2625a00>;
+            spi-cpol;
+            spi-cpha;
+        };
     };
   - | # BRCMSTB SoC: MSPI master for any SPI device
     spi@f0416000 {
-            clocks = <&upg_fixed>;
-            compatible = "brcm,spi-brcmstb-mspi", "brcm,spi-bcm-qspi";
-            reg = <0xf0416000 0x180>;
-            reg-names = "mspi";
-            interrupts = <0x14>;
-            interrupt-parent = <&irq0_aon_intc>;
-            interrupt-names = "mspi_done";
-            #address-cells = <1>;
-            #size-cells = <0>;
+        clocks = <&upg_fixed>;
+        compatible = "brcm,spi-brcmstb-mspi", "brcm,spi-bcm-qspi";
+        reg = <0xf0416000 0x180>;
+        reg-names = "mspi";
+        interrupts = <0x14>;
+        interrupt-parent = <&irq0_aon_intc>;
+        interrupt-names = "mspi_done";
+        #address-cells = <1>;
+        #size-cells = <0>;
     };
   - | # iProc SoC
     #include <dt-bindings/interrupt-controller/irq.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     spi@18027200 {
-            compatible = "brcm,spi-nsp-qspi", "brcm,spi-bcm-qspi";
-            reg = <0x18027200 0x184>,
-                  <0x18027000 0x124>,
-                  <0x1811c408 0x004>,
-                  <0x180273a0 0x01c>;
-            reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
-            interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
-                         <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
-            interrupt-names = "mspi_done",
-                              "mspi_halted",
-                              "spi_lr_fullness_reached",
-                              "spi_lr_session_aborted",
-                              "spi_lr_impatient",
-                              "spi_lr_session_done";
-            clocks = <&iprocmed>;
-            num-cs = <2>;
-            #address-cells = <1>;
-            #size-cells = <0>;
+        compatible = "brcm,spi-nsp-qspi", "brcm,spi-bcm-qspi";
+        reg = <0x18027200 0x184>,
+              <0x18027000 0x124>,
+              <0x1811c408 0x004>,
+              <0x180273a0 0x01c>;
+        reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
+        interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "mspi_done",
+                          "mspi_halted",
+                          "spi_lr_fullness_reached",
+                          "spi_lr_session_aborted",
+                          "spi_lr_impatient",
+                          "spi_lr_session_done";
+        clocks = <&iprocmed>;
+        num-cs = <2>;
+        #address-cells = <1>;
+        #size-cells = <0>;
     };
   - | # NS2 SoC
     #include <dt-bindings/interrupt-controller/irq.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     spi@66470200 {
-            compatible = "brcm,spi-ns2-qspi", "brcm,spi-bcm-qspi";
-            reg = <0x66470200 0x184>,
-                  <0x66470000 0x124>,
-                  <0x67017408 0x004>,
-                  <0x664703a0 0x01c>;
-            reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
-            interrupts = <GIC_SPI 419 IRQ_TYPE_LEVEL_HIGH>;
-            interrupt-names = "spi_l1_intr";
-            clocks = <&iprocmed>;
-            num-cs = <2>;
+        compatible = "brcm,spi-ns2-qspi", "brcm,spi-bcm-qspi";
+        reg = <0x66470200 0x184>,
+              <0x66470000 0x124>,
+              <0x67017408 0x004>,
+              <0x664703a0 0x01c>;
+        reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
+        interrupts = <GIC_SPI 419 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "spi_l1_intr";
+        clocks = <&iprocmed>;
+        num-cs = <2>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash@0 {
             #address-cells = <1>;
-            #size-cells = <0>;
-
-            flash@0 {
-                    #address-cells = <1>;
-                    #size-cells = <1>;
-                    compatible = "m25p80";
-                    reg = <0x0>;
-                    spi-max-frequency = <12500000>;
-                    spi-cpol;
-                    spi-cpha;
-            };
+            #size-cells = <1>;
+            compatible = "m25p80";
+            reg = <0x0>;
+            spi-max-frequency = <12500000>;
+            spi-cpol;
+            spi-cpha;
+        };
     };

Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml

@@ -47,7 +47,7 @@ properties:
   cdns,fifo-depth:
     description:
       Size of the data FIFO in words.
-    $ref: "/schemas/types.yaml#/definitions/uint32"
+    $ref: /schemas/types.yaml#/definitions/uint32
     enum: [ 128, 256 ]
     default: 128
 
@@ -103,21 +103,21 @@ unevaluatedProperties: false
 examples:
   - |
     qspi: spi@ff705000 {
-      compatible = "cdns,qspi-nor";
-      #address-cells = <1>;
-      #size-cells = <0>;
-      reg = <0xff705000 0x1000>,
-            <0xffa00000 0x1000>;
-      interrupts = <0 151 4>;
-      clocks = <&qspi_clk>;
-      cdns,fifo-depth = <128>;
-      cdns,fifo-width = <4>;
-      cdns,trigger-address = <0x00000000>;
-      resets = <&rst 0x1>, <&rst 0x2>;
-      reset-names = "qspi", "qspi-ocp";
-
-      flash@0 {
-              compatible = "jedec,spi-nor";
-              reg = <0x0>;
-      };
+        compatible = "cdns,qspi-nor";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        reg = <0xff705000 0x1000>,
+              <0xffa00000 0x1000>;
+        interrupts = <0 151 4>;
+        clocks = <&qspi_clk>;
+        cdns,fifo-depth = <128>;
+        cdns,fifo-width = <4>;
+        cdns,trigger-address = <0x00000000>;
+        resets = <&rst 0x1>, <&rst 0x2>;
+        reset-names = "qspi", "qspi-ocp";
+
+        flash@0 {
+            compatible = "jedec,spi-nor";
+            reg = <0x0>;
+        };
     };

Documentation/devicetree/bindings/spi/cdns,xspi.yaml

@@ -2,8 +2,8 @@
 # Copyright 2020-21 Cadence
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/spi/cdns,xspi.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/spi/cdns,xspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Cadence XSPI Controller
 
@@ -16,7 +16,7 @@ description: |
   read/write access to slaves such as SPI-NOR flash.
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/fsl,spi-fsl-qspi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Han Xu <han.xu@nxp.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/fsl-imx-cspi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Shawn Guo <shawnguo@kernel.org>
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Leilk Liu <leilk.liu@mediatek.com>
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/mediatek,spi-mtk-snfi.yaml

@@ -18,14 +18,12 @@ description: |
   using the accompanying ECC engine. There should be only one spi
   slave device following generic spi bindings.
 
-allOf:
-  - $ref: /schemas/spi/spi-controller.yaml#
-
 properties:
   compatible:
     enum:
       - mediatek,mt7622-snand
       - mediatek,mt7629-snand
+      - mediatek,mt7986-snand
 
   reg:
     items:
@@ -36,19 +34,20 @@ properties:
       - description: NFI interrupt
 
   clocks:
-    items:
-      - description: clock used for the controller
-      - description: clock used for the SPI bus
+    minItems: 2
+    maxItems: 3
 
   clock-names:
-    items:
-      - const: nfi_clk
-      - const: pad_clk
+    minItems: 2
+    maxItems: 3
 
   nand-ecc-engine:
     description: device-tree node of the accompanying ECC engine.
     $ref: /schemas/types.yaml#/definitions/phandle
 
+  mediatek,rx-latch-latency-ns:
+    description: Data read latch latency, unit is nanoseconds.
+
 required:
   - compatible
   - reg
@@ -57,6 +56,43 @@ required:
   - clock-names
   - nand-ecc-engine
 
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          enum:
+            - mediatek,mt7622-snand
+            - mediatek,mt7629-snand
+    then:
+      properties:
+        clocks:
+          items:
+            - description: clock used for the controller
+            - description: clock used for the SPI bus
+        clock-names:
+          items:
+            - const: nfi_clk
+            - const: pad_clk
+
+  - if:
+      properties:
+        compatible:
+          enum:
+            - mediatek,mt7986-snand
+    then:
+      properties:
+        clocks:
+          items:
+            - description: clock used for the controller
+            - description: clock used for the SPI bus
+            - description: clock used for the AHB bus
+        clock-names:
+          items:
+            - const: nfi_clk
+            - const: pad_clk
+            - const: nfi_hclk
+
 unevaluatedProperties: false
 
 examples:

Documentation/devicetree/bindings/spi/mediatek,spi-slave-mt27xx.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Leilk Liu <leilk.liu@mediatek.com>
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/mikrotik,rb4xx-spi.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Bert Vermeulen <bert@biot.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/mxicy,mx25f0a-spi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Miquel Raynal <miquel.raynal@bootlin.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/mxs-spi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Marek Vasut <marex@denx.de>
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Jonathan Hunter <jonathanh@nvidia.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:
@@ -74,25 +74,25 @@ examples:
     #include <dt-bindings/reset/tegra210-car.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     spi@70410000 {
-            compatible = "nvidia,tegra210-qspi";
-            reg = <0x70410000 0x1000>;
-            interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
-            #address-cells = <1>;
-            #size-cells = <0>;
-            clocks = <&tegra_car TEGRA210_CLK_QSPI>,
-                     <&tegra_car TEGRA210_CLK_QSPI_PM>;
-            clock-names = "qspi", "qspi_out";
-            resets = <&tegra_car 211>;
-            dmas = <&apbdma 5>, <&apbdma 5>;
-            dma-names = "rx", "tx";
-
-            flash@0 {
-                    compatible = "jedec,spi-nor";
-                    reg = <0>;
-                    spi-max-frequency = <104000000>;
-                    spi-tx-bus-width = <2>;
-                    spi-rx-bus-width = <2>;
-                    nvidia,tx-clk-tap-delay = <0>;
-                    nvidia,rx-clk-tap-delay = <0>;
-            };
+        compatible = "nvidia,tegra210-qspi";
+        reg = <0x70410000 0x1000>;
+        interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        clocks = <&tegra_car TEGRA210_CLK_QSPI>,
+                 <&tegra_car TEGRA210_CLK_QSPI_PM>;
+        clock-names = "qspi", "qspi_out";
+        resets = <&tegra_car 211>;
+        dmas = <&apbdma 5>, <&apbdma 5>;
+        dma-names = "rx", "tx";
+
+        flash@0 {
+            compatible = "jedec,spi-nor";
+            reg = <0>;
+            spi-max-frequency = <104000000>;
+            spi-tx-bus-width = <2>;
+            spi-rx-bus-width = <2>;
+            nvidia,tx-clk-tap-delay = <0>;
+            nvidia,rx-clk-tap-delay = <0>;
+        };
     };

Documentation/devicetree/bindings/spi/qcom,spi-qcom-qspi.yaml

 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/spi/qcom,spi-qcom-qspi.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/spi/qcom,spi-qcom-qspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Qualcomm Quad Serial Peripheral Interface (QSPI)
 
@@ -53,6 +52,11 @@ properties:
       - const: qspi-config
       - const: qspi-memory
 
+  operating-points-v2: true
+
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -88,7 +92,6 @@ examples:
                 spi-tx-bus-width = <2>;
                 spi-rx-bus-width = <2>;
             };
-
         };
     };
 ...

Documentation/devicetree/bindings/spi/realtek,rtl-spi.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Birger Koblitz <mail@birger-koblitz.de>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/renesas,rspi.yaml

@@ -141,15 +141,15 @@ examples:
     #include <dt-bindings/power/r8a7791-sysc.h>
 
     qspi: spi@e6b10000 {
-            compatible = "renesas,qspi-r8a7791", "renesas,qspi";
-            reg = <0xe6b10000 0x2c>;
-            interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&cpg CPG_MOD 917>;
-            dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
-            dma-names = "tx", "rx", "tx", "rx";
-            power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
-            resets = <&cpg 917>;
-            num-cs = <1>;
-            #address-cells = <1>;
-            #size-cells = <0>;
+        compatible = "renesas,qspi-r8a7791", "renesas,qspi";
+        reg = <0xe6b10000 0x2c>;
+        interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cpg CPG_MOD 917>;
+        dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
+        dma-names = "tx", "rx", "tx", "rx";
+        power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+        resets = <&cpg 917>;
+        num-cs = <1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
     };

Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Mark Brown <broonie@kernel.org>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
   - if:
       properties:
         compatible:

Documentation/devicetree/bindings/spi/spi-bcm63xx-hsspi.txt

-Binding for Broadcom BCM6328 High Speed SPI controller
-
-Required properties:
-- compatible: must contain of "brcm,bcm6328-hsspi".
-- reg: Base address and size of the controllers memory area.
-- interrupts: Interrupt for the SPI block.
-- clocks: phandles of the SPI clock and the PLL clock.
-- clock-names: must be "hsspi", "pll".
-- #address-cells: <1>, as required by generic SPI binding.
-- #size-cells: <0>, also as required by generic SPI binding.
-
-Optional properties:
-- num-cs: some controllers have less than 8 cs signals. Defaults to 8
-  if absent.
-
-Child nodes as per the generic SPI binding.
-
-Example:
-
-	spi@10001000 {
-		compatible = "brcm,bcm6328-hsspi";
-		reg = <0x10001000 0x600>;
-
-		interrupts = <29>;
-
-		clocks = <&clkctl 9>, <&hsspi_pll>;
-		clock-names = "hsspi", "pll";
-
-		num-cs = <2>;
-
-		#address-cells = <1>;
-		#size-cells = <0>;
-	};

Documentation/devicetree/bindings/spi/spi-cadence.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Michal Simek <michal.simek@xilinx.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Anson Huang <Anson.Huang@nxp.com>
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/spi-gpio.yaml

@@ -14,7 +14,7 @@ description:
   dedicated GPIO lines.
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
 
 properties:
   compatible:
@@ -41,7 +41,7 @@ properties:
   num-chipselects:
     description: Number of chipselect lines. Should be <0> if a single device
       with no chip select is connected.
-    $ref: "/schemas/types.yaml#/definitions/uint32"
+    $ref: /schemas/types.yaml#/definitions/uint32
 
   # Deprecated properties
   gpio-sck: false

Documentation/devicetree/bindings/spi/spi-mux.yaml

@@ -30,8 +30,8 @@ description: |
       +------------+
 
 allOf:
-  - $ref: "/schemas/spi/spi-controller.yaml#"
-  - $ref: "/schemas/spi/spi-peripheral-props.yaml#"
+  - $ref: /schemas/spi/spi-controller.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 maintainers:
   - Chris Packham <chris.packham@alliedtelesis.co.nz>

Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Kuldeep Singh <singh.kuldeep87k@gmail.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml

@@ -49,6 +49,16 @@ properties:
       Delay in nanoseconds to be introduced by the controller after CS is
       asserted.
 
+  spi-cs-hold-delay-ns:
+    description:
+      Delay in nanoseconds to be introduced by the controller before CS is
+      de-asserted.
+
+  spi-cs-inactive-delay-ns:
+    description:
+      Delay in nanoseconds to be introduced by the controller after CS is
+      de-asserted.
+
   spi-rx-bus-width:
     description:
       Bus width to the SPI bus used for read transfers.

Documentation/devicetree/bindings/spi/spi-pl022.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Linus Walleij <linus.walleij@linaro.org>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 # We need a select here so we don't match all nodes with 'arm,primecell'
 select:
@@ -45,7 +45,7 @@ properties:
     description: delay in ms following transfer completion before the
       runtime power management system suspends the device. A setting of 0
       indicates no delay and the device will be suspended immediately.
-    $ref: "/schemas/types.yaml#/definitions/uint32"
+    $ref: /schemas/types.yaml#/definitions/uint32
 
   pl022,rt:
     description: indicates the controller should run the message pump with realtime
@@ -81,7 +81,7 @@ patternProperties:
     properties:
       pl022,interface:
         description: SPI interface type
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         enum:
           - 0      # SPI
           - 1      # Texas Instruments Synchronous Serial Frame Format
@@ -89,7 +89,7 @@ patternProperties:
 
       pl022,com-mode:
         description: Specifies the transfer mode
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         enum:
           - 0      # interrupt mode
           - 1      # polling mode
@@ -98,30 +98,30 @@ patternProperties:
 
       pl022,rx-level-trig:
         description: Rx FIFO watermark level
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 0
         maximum: 4
 
       pl022,tx-level-trig:
         description: Tx FIFO watermark level
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 0
         maximum: 4
 
       pl022,ctrl-len:
         description: Microwire interface - Control length
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 0x03
         maximum: 0x1f
 
       pl022,wait-state:
         description: Microwire interface - Wait state
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         enum: [0, 1]
 
       pl022,duplex:
         description: Microwire interface - Full/Half duplex
-        $ref: "/schemas/types.yaml#/definitions/uint32"
+        $ref: /schemas/types.yaml#/definitions/uint32
         enum: [0, 1]
 
 required:

Documentation/devicetree/bindings/spi/spi-rockchip.yaml

@@ -11,7 +11,7 @@ description:
   as flash and display controllers using the SPI communication interface.
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 maintainers:
   - Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/spi/spi-sifive.yaml

@@ -12,7 +12,7 @@ maintainers:
   - Palmer Dabbelt <palmer@sifive.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:
@@ -51,14 +51,14 @@ properties:
   sifive,fifo-depth:
     description:
       Depth of hardware queues; defaults to 8
-    $ref: "/schemas/types.yaml#/definitions/uint32"
+    $ref: /schemas/types.yaml#/definitions/uint32
     enum: [8]
     default: 8
 
   sifive,max-bits-per-word:
     description:
       Maximum bits per word; defaults to 8
-    $ref: "/schemas/types.yaml#/definitions/uint32"
+    $ref: /schemas/types.yaml#/definitions/uint32
     enum: [0, 1, 2, 3, 4, 5, 6, 7, 8]
     default: 8
 

Documentation/devicetree/bindings/spi/spi-st-ssc.txt

-STMicroelectronics SSC (SPI) Controller
----------------------------------------
-
-Required properties:
-- compatible	: "st,comms-ssc4-spi"
-- reg		: Offset and length of the device's register set
-- interrupts	: The interrupt specifier
-- clock-names	: Must contain "ssc"
-- clocks	: Must contain an entry for each name in clock-names
-		    See ../clk/*
-- pinctrl-names	: Uses "default", can use "sleep" if provided
-		    See ../pinctrl/pinctrl-bindings.txt
-
-Optional properties:
-- cs-gpios	: List of GPIO chip selects
-		    See ../spi/spi-bus.txt
-
-Child nodes represent devices on the SPI bus
-  See ../spi/spi-bus.txt
-
-Example:
-	spi@9840000 {
-		compatible	= "st,comms-ssc4-spi";
-		reg		= <0x9840000 0x110>;
-		interrupts	= <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
-		clocks		= <&clk_s_c0_flexgen CLK_EXT2F_A9>;
-		clock-names	= "ssc";
-		pinctrl-0	= <&pinctrl_spi0_default>;
-		pinctrl-names	= "default";
-		cs-gpios	= <&pio17 5 0>;
-		#address-cells	= <1>;
-		#size-cells	= <0>;
-
-		st95hf@0{
-			compatible		= "st,st95hf";
-			reg			= <0>;
-			spi-max-frequency	= <1000000>;
-			interrupts		= <2 IRQ_TYPE_EDGE_FALLING>;
-		};
-	};

Documentation/devicetree/bindings/spi/spi-sunplus-sp7021.yaml

@@ -8,7 +8,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Sunplus sp7021 SPI controller
 
 allOf:
-  - $ref: "spi-controller.yaml"
+  - $ref: spi-controller.yaml
 
 maintainers:
   - Li-hao Kuo <lhjeff911@gmail.com>
@@ -59,9 +59,9 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/interrupt-controller/irq.h>
-    spi@9C002D80 {
+    spi@9c002d80 {
         compatible = "sunplus,sp7021-spi";
-        reg = <0x9C002D80 0x80>, <0x9C002E00 0x80>;
+        reg = <0x9c002d80 0x80>, <0x9c002e00 0x80>;
         reg-names = "master", "slave";
         interrupt-parent = <&intc>;
         interrupt-names = "dma_w",

Documentation/devicetree/bindings/spi/spi-xilinx.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Michal Simek <michal.simek@xilinx.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/spi-zynqmp-qspi.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Michal Simek <michal.simek@xilinx.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/sprd,spi-adi.yaml

 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/spi/sprd,spi-adi.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/spi/sprd,spi-adi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Spreadtrum ADI controller
 

Documentation/devicetree/bindings/spi/st,ssc-spi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/st,ssc-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics SSC SPI Controller
+
+description: |
+  The STMicroelectronics SSC SPI controller can be found on STi platforms
+  and it used to communicate with external devices using the
+  Serial Peripheral Interface.
+
+maintainers:
+  - Patrice Chotard <patrice.chotard@foss.st.com>
+
+allOf:
+  - $ref: spi-controller.yaml#
+
+properties:
+  compatible:
+    const: st,comms-ssc4-spi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: ssc
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/stih407-clks.h>
+    spi@9840000 {
+      compatible = "st,comms-ssc4-spi";
+      reg = <0x9840000 0x110>;
+      interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>;
+      clock-names = "ssc";
+      pinctrl-0 = <&pinctrl_spi0_default>;
+      pinctrl-names = "default";
+      #address-cells = <1>;
+      #size-cells = <0>;
+    };
+
+...

Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Patrice Chotard <patrice.chotard@foss.st.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/spi/st,stm32-spi.yaml

@@ -17,7 +17,7 @@ maintainers:
   - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
   - if:
       properties:
         compatible:
@@ -84,18 +84,17 @@ examples:
     #include <dt-bindings/clock/stm32mp1-clks.h>
     #include <dt-bindings/reset/stm32mp1-resets.h>
     spi@4000b000 {
-      #address-cells = <1>;
-      #size-cells = <0>;
-      compatible = "st,stm32h7-spi";
-      reg = <0x4000b000 0x400>;
-      interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
-      clocks = <&rcc SPI2_K>;
-      resets = <&rcc SPI2_R>;
-      dmas = <&dmamux1 0 39 0x400 0x05>,
-             <&dmamux1 1 40 0x400 0x05>;
-      dma-names = "rx", "tx";
-      cs-gpios = <&gpioa 11 0>;
-
+        #address-cells = <1>;
+        #size-cells = <0>;
+        compatible = "st,stm32h7-spi";
+        reg = <0x4000b000 0x400>;
+        interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&rcc SPI2_K>;
+        resets = <&rcc SPI2_R>;
+        dmas = <&dmamux1 0 39 0x400 0x05>,
+               <&dmamux1 1 40 0x400 0x05>;
+        dma-names = "rx", "tx";
+        cs-gpios = <&gpioa 11 0>;
     };
 
 ...

Documentation/devicetree/bindings/spi/xlnx,zynq-qspi.yaml

@@ -11,7 +11,7 @@ description:
   memory devices.
 
 allOf:
-  - $ref: "spi-controller.yaml#"
+  - $ref: spi-controller.yaml#
 
 maintainers:
   - Michal Simek <michal.simek@xilinx.com>

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -65,6 +65,8 @@ properties:
           - capella,cm3232
             # CM3323: Ambient Light Sensor
           - capella,cm3323
+            # Cisco SPI Petra
+          - cisco,spi-petra
             # High-Precision Digital Thermometer
           - dallas,ds1631
             # Total-Elapsed-Time Recorder with Alarm
@@ -169,6 +171,8 @@ properties:
           - isil,isl29030
             # Intersil ISL68137 Digital Output Configurable PWM Controller
           - isil,isl68137
+            # Linear Technology LTC2488
+          - lineartechnology,ltc2488
             # 5 Bit Programmable, Pulse-Width Modulator
           - maxim,ds1050
             # 10 kOhm digital potentiometer with I2C interface
@@ -227,6 +231,8 @@ properties:
           - memsic,mxc6655
             # Menlo on-board CPLD trivial SPI device
           - menlo,m53cpld
+            # Micron SPI NOR Authenta
+          - micron,spi-authenta
             # Microchip differential I2C ADC, 1 Channel, 18 bit
           - microchip,mcp3421
             # Microchip differential I2C ADC, 2 Channel, 18 bit
@@ -305,10 +311,14 @@ properties:
           - pulsedlight,lidar-lite-v2
             # Renesas ISL29501 time-of-flight sensor
           - renesas,isl29501
+            # Rohm DH2228FV
+          - rohm,dh2228fv
             # S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
           - samsung,24ad0xd1
             # Samsung Exynos SoC SATA PHY I2C device
           - samsung,exynos-sataphy-i2c
+            # Semtech sx1301 baseband processor
+          - semtech,sx1301
             # Sensirion low power multi-pixel gas sensor with I2C interface
           - sensirion,sgpc3
             # Sensirion multi-pixel gas sensor with I2C interface
@@ -323,6 +333,10 @@ properties:
           - sensortek,stk8ba50
             # SGX Sensortech VZ89X Sensors
           - sgx,vz89x
+            # Silicon Labs EM3581 Zigbee SoC with SPI interface
+          - silabs,em3581
+            # Silicon Labs SI3210 Programmable CMOS SLIC/CODEC with SPI interface
+          - silabs,si3210
             # Relative Humidity and Temperature Sensors
           - silabs,si7020
             # Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply

Documentation/spi/pxa2xx.rst

@@ -141,15 +141,15 @@ field. Below is a sample configuration using the PXA255 NSSP.
 ::
 
   static struct pxa2xx_spi_chip cs8415a_chip_info = {
-	.tx_threshold = 8, /* SSP hardward FIFO threshold */
-	.rx_threshold = 8, /* SSP hardward FIFO threshold */
+	.tx_threshold = 8, /* SSP hardware FIFO threshold */
+	.rx_threshold = 8, /* SSP hardware FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
 	.timeout = 235, /* See Intel documentation */
   };
 
   static struct pxa2xx_spi_chip cs8405a_chip_info = {
-	.tx_threshold = 8, /* SSP hardward FIFO threshold */
-	.rx_threshold = 8, /* SSP hardward FIFO threshold */
+	.tx_threshold = 8, /* SSP hardware FIFO threshold */
+	.rx_threshold = 8, /* SSP hardware FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
 	.timeout = 235, /* See Intel documentation */
   };
@@ -157,7 +157,7 @@ field. Below is a sample configuration using the PXA255 NSSP.
   static struct spi_board_info streetracer_spi_board_info[] __initdata = {
 	{
 		.modalias = "cs8415a", /* Name of spi_driver for this device */
-		.max_speed_hz = 3686400, /* Run SSP as fast a possbile */
+		.max_speed_hz = 3686400, /* Run SSP as fast a possible */
 		.bus_num = 2, /* Framework bus number */
 		.chip_select = 0, /* Framework chip select */
 		.platform_data = NULL; /* No spi_driver specific config */
@@ -166,7 +166,7 @@ field. Below is a sample configuration using the PXA255 NSSP.
 	},
 	{
 		.modalias = "cs8405a", /* Name of spi_driver for this device */
-		.max_speed_hz = 3686400, /* Run SSP as fast a possbile */
+		.max_speed_hz = 3686400, /* Run SSP as fast a possible */
 		.bus_num = 2, /* Framework bus number */
 		.chip_select = 1, /* Framework chip select */
 		.controller_data = &cs8405a_chip_info, /* Master chip config */

Documentation/spi/spi-lm70llp.rst

@@ -57,7 +57,7 @@ devices might share the same SI/SO pin.
 The bitbanger routine in this driver (lm70_txrx) is called back from
 the bound "hwmon/lm70" protocol driver through its sysfs hook, using a
 spi_write_then_read() call.  It performs Mode 0 (SPI/Microwire) bitbanging.
-The lm70 driver then inteprets the resulting digital temperature value
+The lm70 driver then interprets the resulting digital temperature value
 and exports it through sysfs.
 
 A "gotcha": National Semiconductor's LM70 LLP eval board circuit schematic

Documentation/spi/spi-summary.rst

@@ -105,7 +105,7 @@ find isn't necessarily helpful.  The four modes combine two mode bits:
  - CPHA indicates the clock phase used to sample data; CPHA=0 says
    sample on the leading edge, CPHA=1 means the trailing edge.
 
-   Since the signal needs to stablize before it's sampled, CPHA=0
+   Since the signal needs to stabilize before it's sampled, CPHA=0
    implies that its data is written half a clock before the first
    clock edge.  The chipselect may have made it become available.
 

MAINTAINERS

@@ -2788,6 +2788,7 @@ M:	Patrice Chotard <patrice.chotard@foss.st.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 W:	http://www.stlinux.com
+F:	Documentation/devicetree/bindings/spi/st,ssc-spi.yaml
 F:	Documentation/devicetree/bindings/i2c/i2c-st.txt
 F:	arch/arm/boot/dts/sti*
 F:	arch/arm/mach-sti/
@@ -4144,6 +4145,17 @@ L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	drivers/phy/broadcom/phy-brcm-usb*
 
+BROADCOM Broadband SoC High Speed SPI Controller DRIVER
+M:	William Zhang <william.zhang@broadcom.com>
+M:	Kursad Oney <kursad.oney@broadcom.com>
+M:	Jonas Gorski <jonas.gorski@gmail.com>
+R:	Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
+L:	linux-spi@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/spi/brcm,bcm63xx-hsspi.yaml
+F:	drivers/spi/spi-bcm63xx-hsspi.c
+F:	drivers/spi/spi-bcmbca-hsspi.c
+
 BROADCOM ETHERNET PHY DRIVERS
 M:	Florian Fainelli <f.fainelli@gmail.com>
 R:	Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>

drivers/spi/Kconfig

@@ -199,6 +199,15 @@ config SPI_BCM_QSPI
 	  based platforms. This driver works for both SPI master for SPI NOR
 	  flash device as well as MSPI device.
 
+config SPI_BCMBCA_HSSPI
+	tristate "Broadcom BCMBCA HS SPI controller driver"
+	depends on ARCH_BCMBCA || COMPILE_TEST
+	help
+	  This enables support for the High Speed SPI controller present on
+	  newer Broadcom BCMBCA SoCs. These SoCs include an updated SPI controller
+	  that adds the capability to allow the driver to control chip select
+	  explicitly.
+
 config SPI_BITBANG
 	tristate "Utilities for Bitbanging SPI masters"
 	help
@@ -247,7 +256,7 @@ config SPI_CADENCE_XSPI
 	  Enable support for the Cadence XSPI Flash controller.
 
 	  Cadence XSPI is a specialized controller for connecting an SPI
-	  Flash over upto 8bit wide bus. Enable this option if you have a
+	  Flash over up to 8-bit wide bus. Enable this option if you have a
 	  device with a Cadence XSPI controller and want to access the
 	  Flash as an MTD device.
 
@@ -295,7 +304,6 @@ config SPI_DW_BT1
 	tristate "Baikal-T1 SPI driver for DW SPI core"
 	depends on MIPS_BAIKAL_T1 || COMPILE_TEST
 	select MULTIPLEXER
-	select MUX_MMIO
 	help
 	  Baikal-T1 SoC is equipped with three DW APB SSI-based MMIO SPI
 	  controllers. Two of them are pretty much normal: with IRQ, DMA,
@@ -448,19 +456,19 @@ config SPI_INTEL
 	tristate
 
 config SPI_INTEL_PCI
-	tristate "Intel PCH/PCU SPI flash PCI driver (DANGEROUS)"
+	tristate "Intel PCH/PCU SPI flash PCI driver"
 	depends on PCI
 	depends on X86 || COMPILE_TEST
 	depends on SPI_MEM
 	select SPI_INTEL
 	help
 	  This enables PCI support for the Intel PCH/PCU SPI controller in
-	  master mode. This controller is present in modern Intel hardware
-	  and is used to hold BIOS and other persistent settings. Using
-	  this driver it is possible to upgrade BIOS directly from Linux.
-
-	  Say N here unless you know what you are doing. Overwriting the
-	  SPI flash may render the system unbootable.
+	  master mode. This controller is used to hold BIOS and other
+	  persistent settings. Controllers present in modern Intel hardware
+	  only work in hardware sequencing mode, this means that the
+	  controller exposes a subset of operations that makes it safer to
+	  use. Using this driver it is possible to upgrade BIOS directly
+	  from Linux.
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called spi-intel-pci.
@@ -472,10 +480,11 @@ config SPI_INTEL_PLATFORM
 	select SPI_INTEL
 	help
 	  This enables platform support for the Intel PCH/PCU SPI
-	  controller in master mode. This controller is present in modern
-	  Intel hardware and is used to hold BIOS and other persistent
-	  settings. Using this driver it is possible to upgrade BIOS
-	  directly from Linux.
+	  controller in master mode that is used to hold BIOS and other
+	  persistent settings. Most of these controllers work in
+	  software sequencing mode, which means that the controller
+	  exposes the low level SPI-NOR opcodes to the software. Using
+	  this driver it is possible to upgrade BIOS directly from Linux.
 
 	  Say N here unless you know what you are doing. Overwriting the
 	  SPI flash may render the system unbootable.
@@ -1142,9 +1151,6 @@ config SPI_SPIDEV
 	help
 	  This supports user mode SPI protocol drivers.
 
-	  Note that this application programming interface is EXPERIMENTAL
-	  and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
-
 config SPI_LOOPBACK_TEST
 	tristate "spi loopback test framework support"
 	depends on m

drivers/spi/Makefile

@@ -30,6 +30,7 @@ obj-$(CONFIG_SPI_BCM2835)		+= spi-bcm2835.o
 obj-$(CONFIG_SPI_BCM2835AUX)		+= spi-bcm2835aux.o
 obj-$(CONFIG_SPI_BCM63XX)		+= spi-bcm63xx.o
 obj-$(CONFIG_SPI_BCM63XX_HSSPI)		+= spi-bcm63xx-hsspi.o
+obj-$(CONFIG_SPI_BCMBCA_HSSPI)		+= spi-bcmbca-hsspi.o
 obj-$(CONFIG_SPI_BCM_QSPI)		+= spi-iproc-qspi.o spi-brcmstb-qspi.o spi-bcm-qspi.o
 obj-$(CONFIG_SPI_BITBANG)		+= spi-bitbang.o
 obj-$(CONFIG_SPI_BUTTERFLY)		+= spi-butterfly.o

drivers/spi/atmel-quadspi.c

@@ -406,7 +406,7 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq,
 
 static int atmel_qspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
 {
-	struct atmel_qspi *aq = spi_controller_get_devdata(mem->spi->master);
+	struct atmel_qspi *aq = spi_controller_get_devdata(mem->spi->controller);
 	u32 sr, offset;
 	int err;
 
@@ -476,7 +476,7 @@ static const struct spi_controller_mem_ops atmel_qspi_mem_ops = {
 
 static int atmel_qspi_setup(struct spi_device *spi)
 {
-	struct spi_controller *ctrl = spi->master;
+	struct spi_controller *ctrl = spi->controller;
 	struct atmel_qspi *aq = spi_controller_get_devdata(ctrl);
 	unsigned long src_rate;
 	u32 scbr;
@@ -512,7 +512,7 @@ static int atmel_qspi_setup(struct spi_device *spi)
 
 static int atmel_qspi_set_cs_timing(struct spi_device *spi)
 {
-	struct spi_controller *ctrl = spi->master;
+	struct spi_controller *ctrl = spi->controller;
 	struct atmel_qspi *aq = spi_controller_get_devdata(ctrl);
 	unsigned long clk_rate;
 	u32 cs_setup;
@@ -582,7 +582,7 @@ static int atmel_qspi_probe(struct platform_device *pdev)
 	struct resource *res;
 	int irq, err = 0;
 
-	ctrl = devm_spi_alloc_master(&pdev->dev, sizeof(*aq));
+	ctrl = devm_spi_alloc_host(&pdev->dev, sizeof(*aq));
 	if (!ctrl)
 		return -ENOMEM;
 

drivers/spi/spi-altera-core.c

@@ -24,7 +24,7 @@
 #define ALTERA_SPI_TXDATA	4
 #define ALTERA_SPI_STATUS	8
 #define ALTERA_SPI_CONTROL	12
-#define ALTERA_SPI_SLAVE_SEL	20
+#define ALTERA_SPI_TARGET_SEL	20
 
 #define ALTERA_SPI_STATUS_ROE_MSK	0x8
 #define ALTERA_SPI_STATUS_TOE_MSK	0x10
@@ -67,7 +67,7 @@ static int altr_spi_readl(struct altera_spi *hw, unsigned int reg,
 
 static inline struct altera_spi *altera_spi_to_hw(struct spi_device *sdev)
 {
-	return spi_master_get_devdata(sdev->master);
+	return spi_controller_get_devdata(sdev->controller);
 }
 
 static void altera_spi_set_cs(struct spi_device *spi, bool is_high)
@@ -77,9 +77,9 @@ static void altera_spi_set_cs(struct spi_device *spi, bool is_high)
 	if (is_high) {
 		hw->imr &= ~ALTERA_SPI_CONTROL_SSO_MSK;
 		altr_spi_writel(hw, ALTERA_SPI_CONTROL, hw->imr);
-		altr_spi_writel(hw, ALTERA_SPI_SLAVE_SEL, 0);
+		altr_spi_writel(hw, ALTERA_SPI_TARGET_SEL, 0);
 	} else {
-		altr_spi_writel(hw, ALTERA_SPI_SLAVE_SEL,
+		altr_spi_writel(hw, ALTERA_SPI_TARGET_SEL,
 				BIT(spi->chip_select));
 		hw->imr |= ALTERA_SPI_CONTROL_SSO_MSK;
 		altr_spi_writel(hw, ALTERA_SPI_CONTROL, hw->imr);
@@ -139,10 +139,10 @@ static void altera_spi_rx_word(struct altera_spi *hw)
 	hw->count++;
 }
 
-static int altera_spi_txrx(struct spi_master *master,
+static int altera_spi_txrx(struct spi_controller *host,
 	struct spi_device *spi, struct spi_transfer *t)
 {
-	struct altera_spi *hw = spi_master_get_devdata(master);
+	struct altera_spi *hw = spi_controller_get_devdata(host);
 	u32 val;
 
 	hw->tx = t->tx_buf;
@@ -175,15 +175,15 @@ static int altera_spi_txrx(struct spi_master *master,
 
 		altera_spi_rx_word(hw);
 	}
-	spi_finalize_current_transfer(master);
+	spi_finalize_current_transfer(host);
 
 	return 0;
 }
 
 irqreturn_t altera_spi_irq(int irq, void *dev)
 {
-	struct spi_master *master = dev;
-	struct altera_spi *hw = spi_master_get_devdata(master);
+	struct spi_controller *host = dev;
+	struct altera_spi *hw = spi_controller_get_devdata(host);
 
 	altera_spi_rx_word(hw);
 
@@ -194,20 +194,20 @@ irqreturn_t altera_spi_irq(int irq, void *dev)
 		hw->imr &= ~ALTERA_SPI_CONTROL_IRRDY_MSK;
 		altr_spi_writel(hw, ALTERA_SPI_CONTROL, hw->imr);
 
-		spi_finalize_current_transfer(master);
+		spi_finalize_current_transfer(host);
 	}
 
 	return IRQ_HANDLED;
 }
 EXPORT_SYMBOL_GPL(altera_spi_irq);
 
-void altera_spi_init_master(struct spi_master *master)
+void altera_spi_init_host(struct spi_controller *host)
 {
-	struct altera_spi *hw = spi_master_get_devdata(master);
+	struct altera_spi *hw = spi_controller_get_devdata(host);
 	u32 val;
 
-	master->transfer_one = altera_spi_txrx;
-	master->set_cs = altera_spi_set_cs;
+	host->transfer_one = altera_spi_txrx;
+	host->set_cs = altera_spi_set_cs;
 
 	/* program defaults into the registers */
 	hw->imr = 0;		/* disable spi interrupts */
@@ -217,6 +217,6 @@ void altera_spi_init_master(struct spi_master *master)
 	if (val & ALTERA_SPI_STATUS_RRDY_MSK)
 		altr_spi_readl(hw, ALTERA_SPI_RXDATA, &val); /* flush rxdata */
 }
-EXPORT_SYMBOL_GPL(altera_spi_init_master);
+EXPORT_SYMBOL_GPL(altera_spi_init_host);
 
 MODULE_LICENSE("GPL");

drivers/spi/spi-altera-dfl.c

@@ -104,20 +104,20 @@ static const struct regmap_config indirect_regbus_cfg = {
 	.reg_read = indirect_bus_reg_read,
 };
 
-static void config_spi_master(void __iomem *base, struct spi_master *master)
+static void config_spi_host(void __iomem *base, struct spi_controller *host)
 {
 	u64 v;
 
 	v = readq(base + SPI_CORE_PARAMETER);
 
-	master->mode_bits = SPI_CS_HIGH;
+	host->mode_bits = SPI_CS_HIGH;
 	if (FIELD_GET(CLK_POLARITY, v))
-		master->mode_bits |= SPI_CPOL;
+		host->mode_bits |= SPI_CPOL;
 	if (FIELD_GET(CLK_PHASE, v))
-		master->mode_bits |= SPI_CPHA;
+		host->mode_bits |= SPI_CPHA;
 
-	master->num_chipselect = FIELD_GET(NUM_CHIPSELECT, v);
-	master->bits_per_word_mask =
+	host->num_chipselect = FIELD_GET(NUM_CHIPSELECT, v);
+	host->bits_per_word_mask =
 		SPI_BPW_RANGE_MASK(1, FIELD_GET(DATA_WIDTH, v));
 }
 
@@ -125,18 +125,18 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
 {
 	struct spi_board_info board_info = { 0 };
 	struct device *dev = &dfl_dev->dev;
-	struct spi_master *master;
+	struct spi_controller *host;
 	struct altera_spi *hw;
 	void __iomem *base;
 	int err;
 
-	master = devm_spi_alloc_master(dev, sizeof(struct altera_spi));
-	if (!master)
+	host = devm_spi_alloc_host(dev, sizeof(struct altera_spi));
+	if (!host)
 		return -ENOMEM;
 
-	master->bus_num = -1;
+	host->bus_num = -1;
 
-	hw = spi_master_get_devdata(master);
+	hw = spi_controller_get_devdata(host);
 
 	hw->dev = dev;
 
@@ -145,10 +145,10 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	config_spi_master(base, master);
+	config_spi_host(base, host);
 	dev_dbg(dev, "%s cs %u bpm 0x%x mode 0x%x\n", __func__,
-		master->num_chipselect, master->bits_per_word_mask,
-		master->mode_bits);
+		host->num_chipselect, host->bits_per_word_mask,
+		host->mode_bits);
 
 	hw->regmap = devm_regmap_init(dev, NULL, base, &indirect_regbus_cfg);
 	if (IS_ERR(hw->regmap))
@@ -156,11 +156,11 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
 
 	hw->irq = -EINVAL;
 
-	altera_spi_init_master(master);
+	altera_spi_init_host(host);
 
-	err = devm_spi_register_master(dev, master);
+	err = devm_spi_register_controller(dev, host);
 	if (err)
-		return dev_err_probe(dev, err, "%s failed to register spi master\n",
+		return dev_err_probe(dev, err, "%s failed to register spi host\n",
 				     __func__);
 
 	if (dfl_dev->revision == FME_FEATURE_REV_MAX10_SPI_N5010)
@@ -172,7 +172,7 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
 	board_info.bus_num = 0;
 	board_info.chip_select = 0;
 
-	if (!spi_new_device(master, &board_info)) {
+	if (!spi_new_device(host, &board_info)) {
 		dev_err(dev, "%s failed to create SPI device: %s\n",
 			__func__, board_info.modalias);
 	}

drivers/spi/spi-altera-platform.c

@@ -39,16 +39,16 @@ static int altera_spi_probe(struct platform_device *pdev)
 	struct altera_spi_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	enum altera_spi_type type = ALTERA_SPI_TYPE_UNKNOWN;
 	struct altera_spi *hw;
-	struct spi_master *master;
+	struct spi_controller *host;
 	int err = -ENODEV;
 	u16 i;
 
-	master = spi_alloc_master(&pdev->dev, sizeof(struct altera_spi));
-	if (!master)
+	host = spi_alloc_host(&pdev->dev, sizeof(struct altera_spi));
+	if (!host)
 		return err;
 
-	/* setup the master state. */
-	master->bus_num = -1;
+	/* setup the host state. */
+	host->bus_num = -1;
 
 	if (pdata) {
 		if (pdata->num_chipselect > ALTERA_SPI_MAX_CS) {
@@ -59,18 +59,18 @@ static int altera_spi_probe(struct platform_device *pdev)
 			goto exit;
 		}
 
-		master->num_chipselect = pdata->num_chipselect;
-		master->mode_bits = pdata->mode_bits;
-		master->bits_per_word_mask = pdata->bits_per_word_mask;
+		host->num_chipselect = pdata->num_chipselect;
+		host->mode_bits = pdata->mode_bits;
+		host->bits_per_word_mask = pdata->bits_per_word_mask;
 	} else {
-		master->num_chipselect = 16;
-		master->mode_bits = SPI_CS_HIGH;
-		master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 16);
+		host->num_chipselect = 16;
+		host->mode_bits = SPI_CS_HIGH;
+		host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 16);
 	}
 
-	master->dev.of_node = pdev->dev.of_node;
+	host->dev.of_node = pdev->dev.of_node;
 
-	hw = spi_master_get_devdata(master);
+	hw = spi_controller_get_devdata(host);
 	hw->dev = &pdev->dev;
 
 	if (platid)
@@ -107,24 +107,24 @@ static int altera_spi_probe(struct platform_device *pdev)
 		}
 	}
 
-	altera_spi_init_master(master);
+	altera_spi_init_host(host);
 
 	/* irq is optional */
 	hw->irq = platform_get_irq(pdev, 0);
 	if (hw->irq >= 0) {
 		err = devm_request_irq(&pdev->dev, hw->irq, altera_spi_irq, 0,
-				       pdev->name, master);
+				       pdev->name, host);
 		if (err)
 			goto exit;
 	}
 
-	err = devm_spi_register_master(&pdev->dev, master);
+	err = devm_spi_register_controller(&pdev->dev, host);
 	if (err)
 		goto exit;
 
 	if (pdata) {
 		for (i = 0; i < pdata->num_devices; i++) {
-			if (!spi_new_device(master, pdata->devices + i))
+			if (!spi_new_device(host, pdata->devices + i))
 				dev_warn(&pdev->dev,
 					 "unable to create SPI device: %s\n",
 					 pdata->devices[i].modalias);
@@ -135,7 +135,7 @@ static int altera_spi_probe(struct platform_device *pdev)
 
 	return 0;
 exit:
-	spi_master_put(master);
+	spi_controller_put(host);
 	return err;
 }
 

drivers/spi/spi-ar934x.c

@@ -61,7 +61,7 @@ static inline int ar934x_spi_clk_div(struct ar934x_spi *sp, unsigned int freq)
 
 static int ar934x_spi_setup(struct spi_device *spi)
 {
-	struct ar934x_spi *sp = spi_controller_get_devdata(spi->master);
+	struct ar934x_spi *sp = spi_controller_get_devdata(spi->controller);
 
 	if ((spi->max_speed_hz == 0) ||
 	    (spi->max_speed_hz > (sp->clk_freq / 2))) {
@@ -74,10 +74,10 @@ static int ar934x_spi_setup(struct spi_device *spi)
 	return 0;
 }
 
-static int ar934x_spi_transfer_one_message(struct spi_controller *master,
+static int ar934x_spi_transfer_one_message(struct spi_controller *ctlr,
 					   struct spi_message *m)
 {
-	struct ar934x_spi *sp = spi_controller_get_devdata(master);
+	struct ar934x_spi *sp = spi_controller_get_devdata(ctlr);
 	struct spi_transfer *t = NULL;
 	struct spi_device *spi = m->spi;
 	unsigned long trx_done, trx_cur;
@@ -150,7 +150,7 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master,
 
 msg_done:
 	m->status = stat;
-	spi_finalize_current_message(master);
+	spi_finalize_current_message(ctlr);
 
 	return 0;
 }
@@ -183,7 +183,7 @@ static int ar934x_spi_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ctlr = devm_spi_alloc_master(&pdev->dev, sizeof(*sp));
+	ctlr = devm_spi_alloc_host(&pdev->dev, sizeof(*sp));
 	if (!ctlr) {
 		dev_info(&pdev->dev, "failed to allocate spi controller\n");
 		ret = -ENOMEM;

drivers/spi/spi-armada-3700.c

@@ -100,7 +100,7 @@
 #define A3700_SPI_CLK_CAPT_EDGE		BIT(7)
 
 struct a3700_spi {
-	struct spi_master *master;
+	struct spi_controller *host;
 	void __iomem *base;
 	struct clk *clk;
 	unsigned int irq;
@@ -174,7 +174,7 @@ static int a3700_spi_pin_mode_set(struct a3700_spi *a3700_spi,
 			val |= A3700_SPI_ADDR_PIN;
 		break;
 	default:
-		dev_err(&a3700_spi->master->dev, "wrong pin mode %u", pin_mode);
+		dev_err(&a3700_spi->host->dev, "wrong pin mode %u", pin_mode);
 		return -EINVAL;
 	}
 
@@ -278,7 +278,7 @@ static int a3700_spi_fifo_flush(struct a3700_spi *a3700_spi)
 
 static void a3700_spi_init(struct a3700_spi *a3700_spi)
 {
-	struct spi_master *master = a3700_spi->master;
+	struct spi_controller *host = a3700_spi->host;
 	u32 val;
 	int i;
 
@@ -295,14 +295,14 @@ static void a3700_spi_init(struct a3700_spi *a3700_spi)
 
 	/* Disable AUTO_CS and deactivate all chip-selects */
 	a3700_spi_auto_cs_unset(a3700_spi);
-	for (i = 0; i < master->num_chipselect; i++)
+	for (i = 0; i < host->num_chipselect; i++)
 		a3700_spi_deactivate_cs(a3700_spi, i);
 
 	/* Enable FIFO mode */
 	a3700_spi_fifo_mode_set(a3700_spi, true);
 
 	/* Set SPI mode */
-	a3700_spi_mode_set(a3700_spi, master->mode_bits);
+	a3700_spi_mode_set(a3700_spi, host->mode_bits);
 
 	/* Reset counters */
 	spireg_write(a3700_spi, A3700_SPI_IF_HDR_CNT_REG, 0);
@@ -315,11 +315,11 @@ static void a3700_spi_init(struct a3700_spi *a3700_spi)
 
 static irqreturn_t a3700_spi_interrupt(int irq, void *dev_id)
 {
-	struct spi_master *master = dev_id;
+	struct spi_controller *host = dev_id;
 	struct a3700_spi *a3700_spi;
 	u32 cause;
 
-	a3700_spi = spi_master_get_devdata(master);
+	a3700_spi = spi_controller_get_devdata(host);
 
 	/* Get interrupt causes */
 	cause = spireg_read(a3700_spi, A3700_SPI_INT_STAT_REG);
@@ -344,7 +344,7 @@ static bool a3700_spi_wait_completion(struct spi_device *spi)
 	unsigned int ctrl_reg;
 	unsigned long timeout_jiffies;
 
-	a3700_spi = spi_master_get_devdata(spi->master);
+	a3700_spi = spi_controller_get_devdata(spi->controller);
 
 	/* SPI interrupt is edge-triggered, which means an interrupt will
 	 * be generated only when detecting a specific status bit changed
@@ -393,7 +393,7 @@ static bool a3700_spi_transfer_wait(struct spi_device *spi,
 {
 	struct a3700_spi *a3700_spi;
 
-	a3700_spi = spi_master_get_devdata(spi->master);
+	a3700_spi = spi_controller_get_devdata(spi->controller);
 	a3700_spi->wait_mask = bit_mask;
 
 	return a3700_spi_wait_completion(spi);
@@ -417,7 +417,7 @@ static void a3700_spi_transfer_setup(struct spi_device *spi,
 {
 	struct a3700_spi *a3700_spi;
 
-	a3700_spi = spi_master_get_devdata(spi->master);
+	a3700_spi = spi_controller_get_devdata(spi->controller);
 
 	a3700_spi_clock_set(a3700_spi, xfer->speed_hz);
 
@@ -434,7 +434,7 @@ static void a3700_spi_transfer_setup(struct spi_device *spi,
 
 static void a3700_spi_set_cs(struct spi_device *spi, bool enable)
 {
-	struct a3700_spi *a3700_spi = spi_master_get_devdata(spi->master);
+	struct a3700_spi *a3700_spi = spi_controller_get_devdata(spi->controller);
 
 	if (!enable)
 		a3700_spi_activate_cs(a3700_spi, spi->chip_select);
@@ -565,10 +565,10 @@ static void a3700_spi_transfer_abort_fifo(struct a3700_spi *a3700_spi)
 	spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);
 }
 
-static int a3700_spi_prepare_message(struct spi_master *master,
+static int a3700_spi_prepare_message(struct spi_controller *host,
 				     struct spi_message *message)
 {
-	struct a3700_spi *a3700_spi = spi_master_get_devdata(master);
+	struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);
 	struct spi_device *spi = message->spi;
 	int ret;
 
@@ -588,11 +588,11 @@ static int a3700_spi_prepare_message(struct spi_master *master,
 	return 0;
 }
 
-static int a3700_spi_transfer_one_fifo(struct spi_master *master,
+static int a3700_spi_transfer_one_fifo(struct spi_controller *host,
 				  struct spi_device *spi,
 				  struct spi_transfer *xfer)
 {
-	struct a3700_spi *a3700_spi = spi_master_get_devdata(master);
+	struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);
 	int ret = 0, timeout = A3700_SPI_TIMEOUT;
 	unsigned int nbits = 0, byte_len;
 	u32 val;
@@ -732,16 +732,16 @@ static int a3700_spi_transfer_one_fifo(struct spi_master *master,
 error:
 	a3700_spi_transfer_abort_fifo(a3700_spi);
 out:
-	spi_finalize_current_transfer(master);
+	spi_finalize_current_transfer(host);
 
 	return ret;
 }
 
-static int a3700_spi_transfer_one_full_duplex(struct spi_master *master,
+static int a3700_spi_transfer_one_full_duplex(struct spi_controller *host,
 				  struct spi_device *spi,
 				  struct spi_transfer *xfer)
 {
-	struct a3700_spi *a3700_spi = spi_master_get_devdata(master);
+	struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);
 	u32 val;
 
 	/* Disable FIFO mode */
@@ -777,27 +777,27 @@ static int a3700_spi_transfer_one_full_duplex(struct spi_master *master,
 
 	}
 
-	spi_finalize_current_transfer(master);
+	spi_finalize_current_transfer(host);
 
 	return 0;
 }
 
-static int a3700_spi_transfer_one(struct spi_master *master,
+static int a3700_spi_transfer_one(struct spi_controller *host,
 				  struct spi_device *spi,
 				  struct spi_transfer *xfer)
 {
 	a3700_spi_transfer_setup(spi, xfer);
 
 	if (xfer->tx_buf && xfer->rx_buf)
-		return a3700_spi_transfer_one_full_duplex(master, spi, xfer);
+		return a3700_spi_transfer_one_full_duplex(host, spi, xfer);
 
-	return a3700_spi_transfer_one_fifo(master, spi, xfer);
+	return a3700_spi_transfer_one_fifo(host, spi, xfer);
 }
 
-static int a3700_spi_unprepare_message(struct spi_master *master,
+static int a3700_spi_unprepare_message(struct spi_controller *host,
 				       struct spi_message *message)
 {
-	struct a3700_spi *a3700_spi = spi_master_get_devdata(master);
+	struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);
 
 	clk_disable(a3700_spi->clk);
 
@@ -815,14 +815,14 @@ static int a3700_spi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *of_node = dev->of_node;
-	struct spi_master *master;
+	struct spi_controller *host;
 	struct a3700_spi *spi;
 	u32 num_cs = 0;
 	int irq, ret = 0;
 
-	master = spi_alloc_master(dev, sizeof(*spi));
-	if (!master) {
-		dev_err(dev, "master allocation failed\n");
+	host = spi_alloc_host(dev, sizeof(*spi));
+	if (!host) {
+		dev_err(dev, "host allocation failed\n");
 		ret = -ENOMEM;
 		goto out;
 	}
@@ -833,23 +833,23 @@ static int a3700_spi_probe(struct platform_device *pdev)
 		goto error;
 	}
 
-	master->bus_num = pdev->id;
-	master->dev.of_node = of_node;
-	master->mode_bits = SPI_MODE_3;
-	master->num_chipselect = num_cs;
-	master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(32);
-	master->prepare_message =  a3700_spi_prepare_message;
-	master->transfer_one = a3700_spi_transfer_one;
-	master->unprepare_message = a3700_spi_unprepare_message;
-	master->set_cs = a3700_spi_set_cs;
-	master->mode_bits |= (SPI_RX_DUAL | SPI_TX_DUAL |
+	host->bus_num = pdev->id;
+	host->dev.of_node = of_node;
+	host->mode_bits = SPI_MODE_3;
+	host->num_chipselect = num_cs;
+	host->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(32);
+	host->prepare_message =  a3700_spi_prepare_message;
+	host->transfer_one = a3700_spi_transfer_one;
+	host->unprepare_message = a3700_spi_unprepare_message;
+	host->set_cs = a3700_spi_set_cs;
+	host->mode_bits |= (SPI_RX_DUAL | SPI_TX_DUAL |
 			      SPI_RX_QUAD | SPI_TX_QUAD);
 
-	platform_set_drvdata(pdev, master);
+	platform_set_drvdata(pdev, host);
 
-	spi = spi_master_get_devdata(master);
+	spi = spi_controller_get_devdata(host);
 
-	spi->master = master;
+	spi->host = host;
 
 	spi->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi->base)) {
@@ -878,23 +878,23 @@ static int a3700_spi_probe(struct platform_device *pdev)
 		goto error;
 	}
 
-	master->max_speed_hz = min_t(unsigned long, A3700_SPI_MAX_SPEED_HZ,
+	host->max_speed_hz = min_t(unsigned long, A3700_SPI_MAX_SPEED_HZ,
 					clk_get_rate(spi->clk));
-	master->min_speed_hz = DIV_ROUND_UP(clk_get_rate(spi->clk),
+	host->min_speed_hz = DIV_ROUND_UP(clk_get_rate(spi->clk),
 						A3700_SPI_MAX_PRESCALE);
 
 	a3700_spi_init(spi);
 
 	ret = devm_request_irq(dev, spi->irq, a3700_spi_interrupt, 0,
-			       dev_name(dev), master);
+			       dev_name(dev), host);
 	if (ret) {
 		dev_err(dev, "could not request IRQ: %d\n", ret);
 		goto error_clk;
 	}
 
-	ret = devm_spi_register_master(dev, master);
+	ret = devm_spi_register_controller(dev, host);
 	if (ret) {
-		dev_err(dev, "Failed to register master\n");
+		dev_err(dev, "Failed to register host\n");
 		goto error_clk;
 	}
 
@@ -903,15 +903,15 @@ static int a3700_spi_probe(struct platform_device *pdev)
 error_clk:
 	clk_unprepare(spi->clk);
 error:
-	spi_master_put(master);
+	spi_controller_put(host);
 out:
 	return ret;
 }
 
 static int a3700_spi_remove(struct platform_device *pdev)
 {
-	struct spi_master *master = platform_get_drvdata(pdev);
-	struct a3700_spi *spi = spi_master_get_devdata(master);
+	struct spi_controller *host = platform_get_drvdata(pdev);
+	struct a3700_spi *spi = spi_controller_get_devdata(host);
 
 	clk_unprepare(spi->clk);
 

drivers/spi/spi-at91-usart.c

@@ -38,7 +38,7 @@
 #define US_CR_TXEN		BIT(6)
 #define US_CR_TXDIS		BIT(7)
 
-#define US_MR_SPI_MASTER	0x0E
+#define US_MR_SPI_HOST		0x0E
 #define US_MR_CHRL		GENMASK(7, 6)
 #define US_MR_CPHA		BIT(8)
 #define US_MR_CPOL		BIT(16)
@@ -61,7 +61,7 @@
 #define US_OVRE_RXRDY_IRQS	(US_IR_OVRE | US_IR_RXRDY)
 
 #define US_INIT \
-	(US_MR_SPI_MASTER | US_MR_CHRL | US_MR_CLKO | US_MR_WRDBT)
+	(US_MR_SPI_HOST | US_MR_CHRL | US_MR_CLKO | US_MR_WRDBT)
 #define US_DMA_MIN_BYTES       16
 #define US_DMA_TIMEOUT         (msecs_to_jiffies(1000))
 
@@ -104,7 +104,7 @@ struct at91_usart_spi {
 static void dma_callback(void *data)
 {
 	struct spi_controller   *ctlr = data;
-	struct at91_usart_spi   *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi   *aus = spi_controller_get_devdata(ctlr);
 
 	at91_usart_spi_writel(aus, IER, US_IR_RXRDY);
 	aus->current_rx_remaining_bytes = 0;
@@ -115,7 +115,7 @@ static bool at91_usart_spi_can_dma(struct spi_controller *ctrl,
 				   struct spi_device *spi,
 				   struct spi_transfer *xfer)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctrl);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctrl);
 
 	return aus->use_dma && xfer->len >= US_DMA_MIN_BYTES;
 }
@@ -216,7 +216,7 @@ static void at91_usart_spi_stop_dma(struct spi_controller *ctlr)
 static int at91_usart_spi_dma_transfer(struct spi_controller *ctlr,
 				       struct spi_transfer *xfer)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 	struct dma_chan	 *rxchan = ctlr->dma_rx;
 	struct dma_chan *txchan = ctlr->dma_tx;
 	struct dma_async_tx_descriptor *rxdesc;
@@ -334,7 +334,7 @@ at91_usart_spi_set_xfer_speed(struct at91_usart_spi *aus,
 static irqreturn_t at91_usart_spi_interrupt(int irq, void *dev_id)
 {
 	struct spi_controller *controller = dev_id;
-	struct at91_usart_spi *aus = spi_master_get_devdata(controller);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(controller);
 
 	spin_lock(&aus->lock);
 	at91_usart_spi_read_status(aus);
@@ -359,7 +359,7 @@ static irqreturn_t at91_usart_spi_interrupt(int irq, void *dev_id)
 
 static int at91_usart_spi_setup(struct spi_device *spi)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(spi->controller);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(spi->controller);
 	u32 *ausd = spi->controller_state;
 	unsigned int mr = at91_usart_spi_readl(aus, MR);
 
@@ -399,7 +399,7 @@ static int at91_usart_spi_transfer_one(struct spi_controller *ctlr,
 				       struct spi_device *spi,
 				       struct spi_transfer *xfer)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 	unsigned long dma_timeout = 0;
 	int ret = 0;
 
@@ -444,7 +444,7 @@ static int at91_usart_spi_transfer_one(struct spi_controller *ctlr,
 static int at91_usart_spi_prepare_message(struct spi_controller *ctlr,
 					  struct spi_message *message)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 	struct spi_device *spi = message->spi;
 	u32 *ausd = spi->controller_state;
 
@@ -458,7 +458,7 @@ static int at91_usart_spi_prepare_message(struct spi_controller *ctlr,
 static int at91_usart_spi_unprepare_message(struct spi_controller *ctlr,
 					    struct spi_message *message)
 {
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 
 	at91_usart_spi_writel(aus, CR, US_RESET | US_DISABLE);
 	at91_usart_spi_writel(aus, IDR, US_OVRE_RXRDY_IRQS);
@@ -515,7 +515,7 @@ static int at91_usart_spi_probe(struct platform_device *pdev)
 		return PTR_ERR(clk);
 
 	ret = -ENOMEM;
-	controller = spi_alloc_master(&pdev->dev, sizeof(*aus));
+	controller = spi_alloc_host(&pdev->dev, sizeof(*aus));
 	if (!controller)
 		goto at91_usart_spi_probe_fail;
 
@@ -539,7 +539,7 @@ static int at91_usart_spi_probe(struct platform_device *pdev)
 						US_MAX_CLK_DIV);
 	platform_set_drvdata(pdev, controller);
 
-	aus = spi_master_get_devdata(controller);
+	aus = spi_controller_get_devdata(controller);
 
 	aus->dev = &pdev->dev;
 	aus->regs = devm_ioremap_resource(&pdev->dev, regs);
@@ -574,9 +574,9 @@ static int at91_usart_spi_probe(struct platform_device *pdev)
 	spin_lock_init(&aus->lock);
 	init_completion(&aus->xfer_completion);
 
-	ret = devm_spi_register_master(&pdev->dev, controller);
+	ret = devm_spi_register_controller(&pdev->dev, controller);
 	if (ret)
-		goto at91_usart_fail_register_master;
+		goto at91_usart_fail_register_controller;
 
 	dev_info(&pdev->dev,
 		 "AT91 USART SPI Controller version 0x%x at %pa (irq %d)\n",
@@ -585,19 +585,19 @@ static int at91_usart_spi_probe(struct platform_device *pdev)
 
 	return 0;
 
-at91_usart_fail_register_master:
+at91_usart_fail_register_controller:
 	at91_usart_spi_release_dma(controller);
 at91_usart_fail_dma:
 	clk_disable_unprepare(clk);
 at91_usart_spi_probe_fail:
-	spi_master_put(controller);
+	spi_controller_put(controller);
 	return ret;
 }
 
 __maybe_unused static int at91_usart_spi_runtime_suspend(struct device *dev)
 {
 	struct spi_controller *ctlr = dev_get_drvdata(dev);
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 
 	clk_disable_unprepare(aus->clk);
 	pinctrl_pm_select_sleep_state(dev);
@@ -608,7 +608,7 @@ __maybe_unused static int at91_usart_spi_runtime_suspend(struct device *dev)
 __maybe_unused static int at91_usart_spi_runtime_resume(struct device *dev)
 {
 	struct spi_controller *ctrl = dev_get_drvdata(dev);
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctrl);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctrl);
 
 	pinctrl_pm_select_default_state(dev);
 
@@ -633,7 +633,7 @@ __maybe_unused static int at91_usart_spi_suspend(struct device *dev)
 __maybe_unused static int at91_usart_spi_resume(struct device *dev)
 {
 	struct spi_controller *ctrl = dev_get_drvdata(dev);
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctrl);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctrl);
 	int ret;
 
 	if (!pm_runtime_suspended(dev)) {
@@ -650,7 +650,7 @@ __maybe_unused static int at91_usart_spi_resume(struct device *dev)
 static int at91_usart_spi_remove(struct platform_device *pdev)
 {
 	struct spi_controller *ctlr = platform_get_drvdata(pdev);
-	struct at91_usart_spi *aus = spi_master_get_devdata(ctlr);
+	struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
 
 	at91_usart_spi_release_dma(ctlr);
 	clk_disable_unprepare(aus->clk);

drivers/spi/spi-ath79.c

@@ -58,7 +58,7 @@ static inline void ath79_spi_wr(struct ath79_spi *sp, unsigned int reg, u32 val)
 
 static inline struct ath79_spi *ath79_spidev_to_sp(struct spi_device *spi)
 {
-	return spi_master_get_devdata(spi->master);
+	return spi_controller_get_devdata(spi->controller);
 }
 
 static inline void ath79_spi_delay(struct ath79_spi *sp, unsigned int nsecs)
@@ -120,7 +120,7 @@ static u32 ath79_spi_txrx_mode0(struct spi_device *spi, unsigned int nsecs,
 		else
 			out = ioc & ~AR71XX_SPI_IOC_DO;
 
-		/* setup MSB (to slave) on trailing edge */
+		/* setup MSB (to target) on trailing edge */
 		ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out);
 		ath79_spi_delay(sp, nsecs);
 		ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out | AR71XX_SPI_IOC_CLK);
@@ -168,28 +168,28 @@ static const struct spi_controller_mem_ops ath79_mem_ops = {
 
 static int ath79_spi_probe(struct platform_device *pdev)
 {
-	struct spi_master *master;
+	struct spi_controller *host;
 	struct ath79_spi *sp;
 	unsigned long rate;
 	int ret;
 
-	master = spi_alloc_master(&pdev->dev, sizeof(*sp));
-	if (master == NULL) {
-		dev_err(&pdev->dev, "failed to allocate spi master\n");
+	host = spi_alloc_host(&pdev->dev, sizeof(*sp));
+	if (host == NULL) {
+		dev_err(&pdev->dev, "failed to allocate spi host\n");
 		return -ENOMEM;
 	}
 
-	sp = spi_master_get_devdata(master);
-	master->dev.of_node = pdev->dev.of_node;
+	sp = spi_controller_get_devdata(host);
+	host->dev.of_node = pdev->dev.of_node;
 	platform_set_drvdata(pdev, sp);
 
-	master->use_gpio_descriptors = true;
-	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
-	master->flags = SPI_MASTER_GPIO_SS;
-	master->num_chipselect = 3;
-	master->mem_ops = &ath79_mem_ops;
+	host->use_gpio_descriptors = true;
+	host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
+	host->flags = SPI_MASTER_GPIO_SS;
+	host->num_chipselect = 3;
+	host->mem_ops = &ath79_mem_ops;
 
-	sp->bitbang.master = master;
+	sp->bitbang.master = host;
 	sp->bitbang.chipselect = ath79_spi_chipselect;
 	sp->bitbang.txrx_word[SPI_MODE_0] = ath79_spi_txrx_mode0;
 	sp->bitbang.flags = SPI_CS_HIGH;
@@ -197,18 +197,18 @@ static int ath79_spi_probe(struct platform_device *pdev)
 	sp->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sp->base)) {
 		ret = PTR_ERR(sp->base);
-		goto err_put_master;
+		goto err_put_host;
 	}
 
 	sp->clk = devm_clk_get(&pdev->dev, "ahb");
 	if (IS_ERR(sp->clk)) {
 		ret = PTR_ERR(sp->clk);
-		goto err_put_master;
+		goto err_put_host;
 	}
 
 	ret = clk_prepare_enable(sp->clk);
 	if (ret)
-		goto err_put_master;
+		goto err_put_host;
 
 	rate = DIV_ROUND_UP(clk_get_rate(sp->clk), MHZ);
 	if (!rate) {
@@ -231,8 +231,8 @@ static int ath79_spi_probe(struct platform_device *pdev)
 	ath79_spi_disable(sp);
 err_clk_disable:
 	clk_disable_unprepare(sp->clk);
-err_put_master:
-	spi_master_put(sp->bitbang.master);
+err_put_host:
+	spi_controller_put(host);
 
 	return ret;
 }
@@ -244,7 +244,7 @@ static int ath79_spi_remove(struct platform_device *pdev)
 	spi_bitbang_stop(&sp->bitbang);
 	ath79_spi_disable(sp);
 	clk_disable_unprepare(sp->clk);
-	spi_master_put(sp->bitbang.master);
+	spi_controller_put(sp->bitbang.master);
 
 	return 0;
 }

drivers/spi/spi-atmel.c

@@ -358,7 +358,7 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 		u32 csr;
 
 		/* Make sure clock polarity is correct */
-		for (i = 0; i < spi->master->num_chipselect; i++) {
+		for (i = 0; i < spi->controller->num_chipselect; i++) {
 			csr = spi_readl(as, CSR0 + 4 * i);
 			if ((csr ^ cpol) & SPI_BIT(CPOL))
 				spi_writel(as, CSR0 + 4 * i,
@@ -419,11 +419,11 @@ static inline bool atmel_spi_use_dma(struct atmel_spi *as,
 	return as->use_dma && xfer->len >= DMA_MIN_BYTES;
 }
 
-static bool atmel_spi_can_dma(struct spi_master *master,
+static bool atmel_spi_can_dma(struct spi_controller *host,
 			      struct spi_device *spi,
 			      struct spi_transfer *xfer)
 {
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 
 	if (IS_ENABLED(CONFIG_SOC_SAM_V4_V5))
 		return atmel_spi_use_dma(as, xfer) &&
@@ -435,7 +435,7 @@ static bool atmel_spi_can_dma(struct spi_master *master,
 
 static int atmel_spi_dma_slave_config(struct atmel_spi *as, u8 bits_per_word)
 {
-	struct spi_master *master = platform_get_drvdata(as->pdev);
+	struct spi_controller *host = platform_get_drvdata(as->pdev);
 	struct dma_slave_config	slave_config;
 	int err = 0;
 
@@ -467,21 +467,21 @@ static int atmel_spi_dma_slave_config(struct atmel_spi *as, u8 bits_per_word)
 	 * So we'd rather write only one data at the time. Hence the transmit
 	 * path works the same whether FIFOs are available (and enabled) or not.
 	 */
-	if (dmaengine_slave_config(master->dma_tx, &slave_config)) {
+	if (dmaengine_slave_config(host->dma_tx, &slave_config)) {
 		dev_err(&as->pdev->dev,
 			"failed to configure tx dma channel\n");
 		err = -EINVAL;
 	}
 
 	/*
-	 * This driver configures the spi controller for master mode (MSTR bit
+	 * This driver configures the spi controller for host mode (MSTR bit
 	 * set to '1' in the Mode Register).
 	 * So according to the datasheet, when FIFOs are available (and
 	 * enabled), the Receive FIFO operates in Single Data Mode.
 	 * So the receive path works the same whether FIFOs are available (and
 	 * enabled) or not.
 	 */
-	if (dmaengine_slave_config(master->dma_rx, &slave_config)) {
+	if (dmaengine_slave_config(host->dma_rx, &slave_config)) {
 		dev_err(&as->pdev->dev,
 			"failed to configure rx dma channel\n");
 		err = -EINVAL;
@@ -490,22 +490,22 @@ static int atmel_spi_dma_slave_config(struct atmel_spi *as, u8 bits_per_word)
 	return err;
 }
 
-static int atmel_spi_configure_dma(struct spi_master *master,
+static int atmel_spi_configure_dma(struct spi_controller *host,
 				   struct atmel_spi *as)
 {
 	struct device *dev = &as->pdev->dev;
 	int err;
 
-	master->dma_tx = dma_request_chan(dev, "tx");
-	if (IS_ERR(master->dma_tx)) {
-		err = PTR_ERR(master->dma_tx);
+	host->dma_tx = dma_request_chan(dev, "tx");
+	if (IS_ERR(host->dma_tx)) {
+		err = PTR_ERR(host->dma_tx);
 		dev_dbg(dev, "No TX DMA channel, DMA is disabled\n");
 		goto error_clear;
 	}
 
-	master->dma_rx = dma_request_chan(dev, "rx");
-	if (IS_ERR(master->dma_rx)) {
-		err = PTR_ERR(master->dma_rx);
+	host->dma_rx = dma_request_chan(dev, "rx");
+	if (IS_ERR(host->dma_rx)) {
+		err = PTR_ERR(host->dma_rx);
 		/*
 		 * No reason to check EPROBE_DEFER here since we have already
 		 * requested tx channel.
@@ -520,45 +520,45 @@ static int atmel_spi_configure_dma(struct spi_master *master,
 
 	dev_info(&as->pdev->dev,
 			"Using %s (tx) and %s (rx) for DMA transfers\n",
-			dma_chan_name(master->dma_tx),
-			dma_chan_name(master->dma_rx));
+			dma_chan_name(host->dma_tx),
+			dma_chan_name(host->dma_rx));
 
 	return 0;
 error:
-	if (!IS_ERR(master->dma_rx))
-		dma_release_channel(master->dma_rx);
-	if (!IS_ERR(master->dma_tx))
-		dma_release_channel(master->dma_tx);
+	if (!IS_ERR(host->dma_rx))
+		dma_release_channel(host->dma_rx);
+	if (!IS_ERR(host->dma_tx))
+		dma_release_channel(host->dma_tx);
 error_clear:
-	master->dma_tx = master->dma_rx = NULL;
+	host->dma_tx = host->dma_rx = NULL;
 	return err;
 }
 
-static void atmel_spi_stop_dma(struct spi_master *master)
+static void atmel_spi_stop_dma(struct spi_controller *host)
 {
-	if (master->dma_rx)
-		dmaengine_terminate_all(master->dma_rx);
-	if (master->dma_tx)
-		dmaengine_terminate_all(master->dma_tx);
+	if (host->dma_rx)
+		dmaengine_terminate_all(host->dma_rx);
+	if (host->dma_tx)
+		dmaengine_terminate_all(host->dma_tx);
 }
 
-static void atmel_spi_release_dma(struct spi_master *master)
+static void atmel_spi_release_dma(struct spi_controller *host)
 {
-	if (master->dma_rx) {
-		dma_release_channel(master->dma_rx);
-		master->dma_rx = NULL;
+	if (host->dma_rx) {
+		dma_release_channel(host->dma_rx);
+		host->dma_rx = NULL;
 	}
-	if (master->dma_tx) {
-		dma_release_channel(master->dma_tx);
-		master->dma_tx = NULL;
+	if (host->dma_tx) {
+		dma_release_channel(host->dma_tx);
+		host->dma_tx = NULL;
 	}
 }
 
 /* This function is called by the DMA driver from tasklet context */
 static void dma_callback(void *data)
 {
-	struct spi_master	*master = data;
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct spi_controller	*host = data;
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 
 	if (is_vmalloc_addr(as->current_transfer->rx_buf) &&
 	    IS_ENABLED(CONFIG_SOC_SAM_V4_V5)) {
@@ -571,13 +571,13 @@ static void dma_callback(void *data)
 /*
  * Next transfer using PIO without FIFO.
  */
-static void atmel_spi_next_xfer_single(struct spi_master *master,
+static void atmel_spi_next_xfer_single(struct spi_controller *host,
 				       struct spi_transfer *xfer)
 {
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 	unsigned long xfer_pos = xfer->len - as->current_remaining_bytes;
 
-	dev_vdbg(master->dev.parent, "atmel_spi_next_xfer_pio\n");
+	dev_vdbg(host->dev.parent, "atmel_spi_next_xfer_pio\n");
 
 	/* Make sure data is not remaining in RDR */
 	spi_readl(as, RDR);
@@ -591,7 +591,7 @@ static void atmel_spi_next_xfer_single(struct spi_master *master,
 	else
 		spi_writel(as, TDR, *(u8 *)(xfer->tx_buf + xfer_pos));
 
-	dev_dbg(master->dev.parent,
+	dev_dbg(host->dev.parent,
 		"  start pio xfer %p: len %u tx %p rx %p bitpw %d\n",
 		xfer, xfer->len, xfer->tx_buf, xfer->rx_buf,
 		xfer->bits_per_word);
@@ -603,10 +603,10 @@ static void atmel_spi_next_xfer_single(struct spi_master *master,
 /*
  * Next transfer using PIO with FIFO.
  */
-static void atmel_spi_next_xfer_fifo(struct spi_master *master,
+static void atmel_spi_next_xfer_fifo(struct spi_controller *host,
 				     struct spi_transfer *xfer)
 {
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 	u32 current_remaining_data, num_data;
 	u32 offset = xfer->len - as->current_remaining_bytes;
 	const u16 *words = (const u16 *)((u8 *)xfer->tx_buf + offset);
@@ -614,7 +614,7 @@ static void atmel_spi_next_xfer_fifo(struct spi_master *master,
 	u16 td0, td1;
 	u32 fifomr;
 
-	dev_vdbg(master->dev.parent, "atmel_spi_next_xfer_fifo\n");
+	dev_vdbg(host->dev.parent, "atmel_spi_next_xfer_fifo\n");
 
 	/* Compute the number of data to transfer in the current iteration */
 	current_remaining_data = ((xfer->bits_per_word > 8) ?
@@ -658,7 +658,7 @@ static void atmel_spi_next_xfer_fifo(struct spi_master *master,
 		num_data--;
 	}
 
-	dev_dbg(master->dev.parent,
+	dev_dbg(host->dev.parent,
 		"  start fifo xfer %p: len %u tx %p rx %p bitpw %d\n",
 		xfer, xfer->len, xfer->tx_buf, xfer->rx_buf,
 		xfer->bits_per_word);
@@ -673,32 +673,32 @@ static void atmel_spi_next_xfer_fifo(struct spi_master *master,
 /*
  * Next transfer using PIO.
  */
-static void atmel_spi_next_xfer_pio(struct spi_master *master,
+static void atmel_spi_next_xfer_pio(struct spi_controller *host,
 				    struct spi_transfer *xfer)
 {
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 
 	if (as->fifo_size)
-		atmel_spi_next_xfer_fifo(master, xfer);
+		atmel_spi_next_xfer_fifo(host, xfer);
 	else
-		atmel_spi_next_xfer_single(master, xfer);
+		atmel_spi_next_xfer_single(host, xfer);
 }
 
 /*
  * Submit next transfer for DMA.
  */
-static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
+static int atmel_spi_next_xfer_dma_submit(struct spi_controller *host,
 				struct spi_transfer *xfer,
 				u32 *plen)
 {
-	struct atmel_spi	*as = spi_master_get_devdata(master);
-	struct dma_chan		*rxchan = master->dma_rx;
-	struct dma_chan		*txchan = master->dma_tx;
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
+	struct dma_chan		*rxchan = host->dma_rx;
+	struct dma_chan		*txchan = host->dma_tx;
 	struct dma_async_tx_descriptor *rxdesc;
 	struct dma_async_tx_descriptor *txdesc;
 	dma_cookie_t		cookie;
 
-	dev_vdbg(master->dev.parent, "atmel_spi_next_xfer_dma_submit\n");
+	dev_vdbg(host->dev.parent, "atmel_spi_next_xfer_dma_submit\n");
 
 	/* Check that the channels are available */
 	if (!rxchan || !txchan)
@@ -749,7 +749,7 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 	if (!txdesc)
 		goto err_dma;
 
-	dev_dbg(master->dev.parent,
+	dev_dbg(host->dev.parent,
 		"  start dma xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
 		xfer, xfer->len, xfer->tx_buf, (unsigned long long)xfer->tx_dma,
 		xfer->rx_buf, (unsigned long long)xfer->rx_dma);
@@ -759,7 +759,7 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 
 	/* Put the callback on the RX transfer only, that should finish last */
 	rxdesc->callback = dma_callback;
-	rxdesc->callback_param = master;
+	rxdesc->callback_param = host;
 
 	/* Submit and fire RX and TX with TX last so we're ready to read! */
 	cookie = rxdesc->tx_submit(rxdesc);
@@ -775,12 +775,12 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 
 err_dma:
 	spi_writel(as, IDR, SPI_BIT(OVRES));
-	atmel_spi_stop_dma(master);
+	atmel_spi_stop_dma(host);
 err_exit:
 	return -ENOMEM;
 }
 
-static void atmel_spi_next_xfer_data(struct spi_master *master,
+static void atmel_spi_next_xfer_data(struct spi_controller *host,
 				struct spi_transfer *xfer,
 				dma_addr_t *tx_dma,
 				dma_addr_t *rx_dma,
@@ -788,8 +788,8 @@ static void atmel_spi_next_xfer_data(struct spi_master *master,
 {
 	*rx_dma = xfer->rx_dma + xfer->len - *plen;
 	*tx_dma = xfer->tx_dma + xfer->len - *plen;
-	if (*plen > master->max_dma_len)
-		*plen = master->max_dma_len;
+	if (*plen > host->max_dma_len)
+		*plen = host->max_dma_len;
 }
 
 static int atmel_spi_set_xfer_speed(struct atmel_spi *as,
@@ -844,17 +844,17 @@ static int atmel_spi_set_xfer_speed(struct atmel_spi *as,
  * Submit next transfer for PDC.
  * lock is held, spi irq is blocked
  */
-static void atmel_spi_pdc_next_xfer(struct spi_master *master,
+static void atmel_spi_pdc_next_xfer(struct spi_controller *host,
 					struct spi_transfer *xfer)
 {
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 	u32			len;
 	dma_addr_t		tx_dma, rx_dma;
 
 	spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS));
 
 	len = as->current_remaining_bytes;
-	atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+	atmel_spi_next_xfer_data(host, xfer, &tx_dma, &rx_dma, &len);
 	as->current_remaining_bytes -= len;
 
 	spi_writel(as, RPR, rx_dma);
@@ -865,7 +865,7 @@ static void atmel_spi_pdc_next_xfer(struct spi_master *master,
 	spi_writel(as, RCR, len);
 	spi_writel(as, TCR, len);
 
-	dev_dbg(&master->dev,
+	dev_dbg(&host->dev,
 		"  start xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
 		xfer, xfer->len, xfer->tx_buf,
 		(unsigned long long)xfer->tx_dma, xfer->rx_buf,
@@ -873,7 +873,7 @@ static void atmel_spi_pdc_next_xfer(struct spi_master *master,
 
 	if (as->current_remaining_bytes) {
 		len = as->current_remaining_bytes;
-		atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+		atmel_spi_next_xfer_data(host, xfer, &tx_dma, &rx_dma, &len);
 		as->current_remaining_bytes -= len;
 
 		spi_writel(as, RNPR, rx_dma);
@@ -884,7 +884,7 @@ static void atmel_spi_pdc_next_xfer(struct spi_master *master,
 		spi_writel(as, RNCR, len);
 		spi_writel(as, TNCR, len);
 
-		dev_dbg(&master->dev,
+		dev_dbg(&host->dev,
 			"  next xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
 			xfer, xfer->len, xfer->tx_buf,
 			(unsigned long long)xfer->tx_dma, xfer->rx_buf,
@@ -944,14 +944,14 @@ atmel_spi_dma_map_xfer(struct atmel_spi *as, struct spi_transfer *xfer)
 	return 0;
 }
 
-static void atmel_spi_dma_unmap_xfer(struct spi_master *master,
+static void atmel_spi_dma_unmap_xfer(struct spi_controller *host,
 				     struct spi_transfer *xfer)
 {
 	if (xfer->tx_dma != INVALID_DMA_ADDRESS)
-		dma_unmap_single(master->dev.parent, xfer->tx_dma,
+		dma_unmap_single(host->dev.parent, xfer->tx_dma,
 				 xfer->len, DMA_TO_DEVICE);
 	if (xfer->rx_dma != INVALID_DMA_ADDRESS)
-		dma_unmap_single(master->dev.parent, xfer->rx_dma,
+		dma_unmap_single(host->dev.parent, xfer->rx_dma,
 				 xfer->len, DMA_FROM_DEVICE);
 }
 
@@ -1039,8 +1039,8 @@ atmel_spi_pump_pio_data(struct atmel_spi *as, struct spi_transfer *xfer)
 static irqreturn_t
 atmel_spi_pio_interrupt(int irq, void *dev_id)
 {
-	struct spi_master	*master = dev_id;
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct spi_controller	*host = dev_id;
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 	u32			status, pending, imr;
 	struct spi_transfer	*xfer;
 	int			ret = IRQ_NONE;
@@ -1052,7 +1052,7 @@ atmel_spi_pio_interrupt(int irq, void *dev_id)
 	if (pending & SPI_BIT(OVRES)) {
 		ret = IRQ_HANDLED;
 		spi_writel(as, IDR, SPI_BIT(OVRES));
-		dev_warn(master->dev.parent, "overrun\n");
+		dev_warn(host->dev.parent, "overrun\n");
 
 		/*
 		 * When we get an overrun, we disregard the current
@@ -1097,8 +1097,8 @@ atmel_spi_pio_interrupt(int irq, void *dev_id)
 static irqreturn_t
 atmel_spi_pdc_interrupt(int irq, void *dev_id)
 {
-	struct spi_master	*master = dev_id;
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct spi_controller	*host = dev_id;
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 	u32			status, pending, imr;
 	int			ret = IRQ_NONE;
 
@@ -1152,12 +1152,12 @@ static int atmel_word_delay_csr(struct spi_device *spi, struct atmel_spi *as)
 static void initialize_native_cs_for_gpio(struct atmel_spi *as)
 {
 	int i;
-	struct spi_master *master = platform_get_drvdata(as->pdev);
+	struct spi_controller *host = platform_get_drvdata(as->pdev);
 
 	if (!as->native_cs_free)
 		return; /* already initialized */
 
-	if (!master->cs_gpiods)
+	if (!host->cs_gpiods)
 		return; /* No CS GPIO */
 
 	/*
@@ -1170,7 +1170,7 @@ static void initialize_native_cs_for_gpio(struct atmel_spi *as)
 		i = 1;
 
 	for (; i < 4; i++)
-		if (master->cs_gpiods[i])
+		if (host->cs_gpiods[i])
 			as->native_cs_free |= BIT(i);
 
 	if (as->native_cs_free)
@@ -1186,7 +1186,7 @@ static int atmel_spi_setup(struct spi_device *spi)
 	int chip_select;
 	int			word_delay_csr;
 
-	as = spi_master_get_devdata(spi->master);
+	as = spi_controller_get_devdata(spi->controller);
 
 	/* see notes above re chipselect */
 	if (!spi->cs_gpiod && (spi->mode & SPI_CS_HIGH)) {
@@ -1254,7 +1254,7 @@ static int atmel_spi_setup(struct spi_device *spi)
 
 static void atmel_spi_set_cs(struct spi_device *spi, bool enable)
 {
-	struct atmel_spi *as = spi_master_get_devdata(spi->master);
+	struct atmel_spi *as = spi_controller_get_devdata(spi->controller);
 	/* the core doesn't really pass us enable/disable, but CS HIGH vs CS LOW
 	 * since we already have routines for activate/deactivate translate
 	 * high/low to active/inactive
@@ -1269,7 +1269,7 @@ static void atmel_spi_set_cs(struct spi_device *spi, bool enable)
 
 }
 
-static int atmel_spi_one_transfer(struct spi_master *master,
+static int atmel_spi_one_transfer(struct spi_controller *host,
 					struct spi_device *spi,
 					struct spi_transfer *xfer)
 {
@@ -1281,7 +1281,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 	int			ret;
 	unsigned long		dma_timeout;
 
-	as = spi_master_get_devdata(master);
+	as = spi_controller_get_devdata(host);
 
 	asd = spi->controller_state;
 	bits = (asd->csr >> 4) & 0xf;
@@ -1295,7 +1295,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 	 * DMA map early, for performance (empties dcache ASAP) and
 	 * better fault reporting.
 	 */
-	if ((!master->cur_msg->is_dma_mapped)
+	if ((!host->cur_msg->is_dma_mapped)
 		&& as->use_pdc) {
 		if (atmel_spi_dma_map_xfer(as, xfer) < 0)
 			return -ENOMEM;
@@ -1311,11 +1311,11 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 
 		if (as->use_pdc) {
 			atmel_spi_lock(as);
-			atmel_spi_pdc_next_xfer(master, xfer);
+			atmel_spi_pdc_next_xfer(host, xfer);
 			atmel_spi_unlock(as);
 		} else if (atmel_spi_use_dma(as, xfer)) {
 			len = as->current_remaining_bytes;
-			ret = atmel_spi_next_xfer_dma_submit(master,
+			ret = atmel_spi_next_xfer_dma_submit(host,
 								xfer, &len);
 			if (ret) {
 				dev_err(&spi->dev,
@@ -1329,7 +1329,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 			}
 		} else {
 			atmel_spi_lock(as);
-			atmel_spi_next_xfer_pio(master, xfer);
+			atmel_spi_next_xfer_pio(host, xfer);
 			atmel_spi_unlock(as);
 		}
 
@@ -1346,7 +1346,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 
 	if (as->done_status) {
 		if (as->use_pdc) {
-			dev_warn(master->dev.parent,
+			dev_warn(host->dev.parent,
 				"overrun (%u/%u remaining)\n",
 				spi_readl(as, TCR), spi_readl(as, RCR));
 
@@ -1362,7 +1362,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 				if (spi_readl(as, SR) & SPI_BIT(TXEMPTY))
 					break;
 			if (!timeout)
-				dev_warn(master->dev.parent,
+				dev_warn(host->dev.parent,
 					 "timeout waiting for TXEMPTY");
 			while (spi_readl(as, SR) & SPI_BIT(RDRF))
 				spi_readl(as, RDR);
@@ -1371,13 +1371,13 @@ static int atmel_spi_one_transfer(struct spi_master *master,
 			spi_readl(as, SR);
 
 		} else if (atmel_spi_use_dma(as, xfer)) {
-			atmel_spi_stop_dma(master);
+			atmel_spi_stop_dma(host);
 		}
 	}
 
-	if (!master->cur_msg->is_dma_mapped
+	if (!host->cur_msg->is_dma_mapped
 		&& as->use_pdc)
-		atmel_spi_dma_unmap_xfer(master, xfer);
+		atmel_spi_dma_unmap_xfer(host, xfer);
 
 	if (as->use_pdc)
 		atmel_spi_disable_pdc_transfer(as);
@@ -1440,7 +1440,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	int			irq;
 	struct clk		*clk;
 	int			ret;
-	struct spi_master	*master;
+	struct spi_controller	*host;
 	struct atmel_spi	*as;
 
 	/* Select default pin state */
@@ -1459,29 +1459,29 @@ static int atmel_spi_probe(struct platform_device *pdev)
 		return PTR_ERR(clk);
 
 	/* setup spi core then atmel-specific driver state */
-	master = spi_alloc_master(&pdev->dev, sizeof(*as));
-	if (!master)
+	host = spi_alloc_host(&pdev->dev, sizeof(*as));
+	if (!host)
 		return -ENOMEM;
 
 	/* the spi->mode bits understood by this driver: */
-	master->use_gpio_descriptors = true;
-	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
-	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16);
-	master->dev.of_node = pdev->dev.of_node;
-	master->bus_num = pdev->id;
-	master->num_chipselect = 4;
-	master->setup = atmel_spi_setup;
-	master->flags = (SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX |
+	host->use_gpio_descriptors = true;
+	host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
+	host->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16);
+	host->dev.of_node = pdev->dev.of_node;
+	host->bus_num = pdev->id;
+	host->num_chipselect = 4;
+	host->setup = atmel_spi_setup;
+	host->flags = (SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX |
 			SPI_MASTER_GPIO_SS);
-	master->transfer_one = atmel_spi_one_transfer;
-	master->set_cs = atmel_spi_set_cs;
-	master->cleanup = atmel_spi_cleanup;
-	master->auto_runtime_pm = true;
-	master->max_dma_len = SPI_MAX_DMA_XFER;
-	master->can_dma = atmel_spi_can_dma;
-	platform_set_drvdata(pdev, master);
+	host->transfer_one = atmel_spi_one_transfer;
+	host->set_cs = atmel_spi_set_cs;
+	host->cleanup = atmel_spi_cleanup;
+	host->auto_runtime_pm = true;
+	host->max_dma_len = SPI_MAX_DMA_XFER;
+	host->can_dma = atmel_spi_can_dma;
+	platform_set_drvdata(pdev, host);
 
-	as = spi_master_get_devdata(master);
+	as = spi_controller_get_devdata(host);
 
 	spin_lock_init(&as->lock);
 
@@ -1502,7 +1502,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	as->use_dma = false;
 	as->use_pdc = false;
 	if (as->caps.has_dma_support) {
-		ret = atmel_spi_configure_dma(master, as);
+		ret = atmel_spi_configure_dma(host, as);
 		if (ret == 0) {
 			as->use_dma = true;
 		} else if (ret == -EPROBE_DEFER) {
@@ -1532,7 +1532,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 			}
 		}
 		if (!as->use_dma)
-			dev_info(master->dev.parent,
+			dev_info(host->dev.parent,
 				 "  can not allocate dma coherent memory\n");
 	}
 
@@ -1541,10 +1541,10 @@ static int atmel_spi_probe(struct platform_device *pdev)
 
 	if (as->use_pdc) {
 		ret = devm_request_irq(&pdev->dev, irq, atmel_spi_pdc_interrupt,
-					0, dev_name(&pdev->dev), master);
+					0, dev_name(&pdev->dev), host);
 	} else {
 		ret = devm_request_irq(&pdev->dev, irq, atmel_spi_pio_interrupt,
-					0, dev_name(&pdev->dev), master);
+					0, dev_name(&pdev->dev), host);
 	}
 	if (ret)
 		goto out_unmap_regs;
@@ -1569,7 +1569,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	ret = devm_spi_register_master(&pdev->dev, master);
+	ret = devm_spi_register_controller(&pdev->dev, host);
 	if (ret)
 		goto out_free_dma;
 
@@ -1585,28 +1585,28 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	pm_runtime_set_suspended(&pdev->dev);
 
 	if (as->use_dma)
-		atmel_spi_release_dma(master);
+		atmel_spi_release_dma(host);
 
 	spi_writel(as, CR, SPI_BIT(SWRST));
 	spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
 	clk_disable_unprepare(clk);
 out_free_irq:
 out_unmap_regs:
-	spi_master_put(master);
+	spi_controller_put(host);
 	return ret;
 }
 
 static int atmel_spi_remove(struct platform_device *pdev)
 {
-	struct spi_master	*master = platform_get_drvdata(pdev);
-	struct atmel_spi	*as = spi_master_get_devdata(master);
+	struct spi_controller	*host = platform_get_drvdata(pdev);
+	struct atmel_spi	*as = spi_controller_get_devdata(host);
 
 	pm_runtime_get_sync(&pdev->dev);
 
 	/* reset the hardware and block queue progress */
 	if (as->use_dma) {
-		atmel_spi_stop_dma(master);
-		atmel_spi_release_dma(master);
+		atmel_spi_stop_dma(host);
+		atmel_spi_release_dma(host);
 		if (IS_ENABLED(CONFIG_SOC_SAM_V4_V5)) {
 			dma_free_coherent(&pdev->dev, SPI_MAX_DMA_XFER,
 					  as->addr_tx_bbuf,
@@ -1633,8 +1633,8 @@ static int atmel_spi_remove(struct platform_device *pdev)
 
 static int atmel_spi_runtime_suspend(struct device *dev)
 {
-	struct spi_master *master = dev_get_drvdata(dev);
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct spi_controller *host = dev_get_drvdata(dev);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 
 	clk_disable_unprepare(as->clk);
 	pinctrl_pm_select_sleep_state(dev);
@@ -1644,8 +1644,8 @@ static int atmel_spi_runtime_suspend(struct device *dev)
 
 static int atmel_spi_runtime_resume(struct device *dev)
 {
-	struct spi_master *master = dev_get_drvdata(dev);
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct spi_controller *host = dev_get_drvdata(dev);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 
 	pinctrl_pm_select_default_state(dev);
 
@@ -1654,11 +1654,11 @@ static int atmel_spi_runtime_resume(struct device *dev)
 
 static int atmel_spi_suspend(struct device *dev)
 {
-	struct spi_master *master = dev_get_drvdata(dev);
+	struct spi_controller *host = dev_get_drvdata(dev);
 	int ret;
 
 	/* Stop the queue running */
-	ret = spi_master_suspend(master);
+	ret = spi_controller_suspend(host);
 	if (ret)
 		return ret;
 
@@ -1670,8 +1670,8 @@ static int atmel_spi_suspend(struct device *dev)
 
 static int atmel_spi_resume(struct device *dev)
 {
-	struct spi_master *master = dev_get_drvdata(dev);
-	struct atmel_spi *as = spi_master_get_devdata(master);
+	struct spi_controller *host = dev_get_drvdata(dev);
+	struct atmel_spi *as = spi_controller_get_devdata(host);
 	int ret;
 
 	ret = clk_prepare_enable(as->clk);
@@ -1689,7 +1689,7 @@ static int atmel_spi_resume(struct device *dev)
 	}
 
 	/* Start the queue running */
-	return spi_master_resume(master);
+	return spi_controller_resume(host);
 }
 
 static const struct dev_pm_ops atmel_spi_pm_ops = {

drivers/spi/spi-bcm63xx-hsspi.c

@@ -20,6 +20,8 @@
 #include <linux/spi/spi.h>
 #include <linux/mutex.h>
 #include <linux/of.h>
+#include <linux/spi/spi-mem.h>
+#include <linux/mtd/spi-nor.h>
 #include <linux/reset.h>
 #include <linux/pm_runtime.h>
 
@@ -57,6 +59,7 @@
 #define PINGPONG_CMD_SS_SHIFT			12
 
 #define HSSPI_PINGPONG_STATUS_REG(x)		(0x84 + (x) * 0x40)
+#define HSSPI_PINGPONG_STATUS_SRC_BUSY		BIT(1)
 
 #define HSSPI_PROFILE_CLK_CTRL_REG(x)		(0x100 + (x) * 0x20)
 #define CLK_CTRL_FREQ_CTRL_MASK			0x0000ffff
@@ -92,15 +95,42 @@
 
 #define HSSPI_MAX_PREPEND_LEN			15
 
-#define HSSPI_MAX_SYNC_CLOCK			30000000
+/*
+ * Some chip require 30MHz but other require 25MHz. Use smaller value to cover
+ * both cases.
+ */
+#define HSSPI_MAX_SYNC_CLOCK			25000000
 
 #define HSSPI_SPI_MAX_CS			8
 #define HSSPI_BUS_NUM				1 /* 0 is legacy SPI */
+#define HSSPI_POLL_STATUS_TIMEOUT_MS	100
+
+#define HSSPI_WAIT_MODE_POLLING		0
+#define HSSPI_WAIT_MODE_INTR		1
+#define HSSPI_WAIT_MODE_MAX			HSSPI_WAIT_MODE_INTR
+
+/*
+ * Default transfer mode is auto. If the msg is prependable, use the prepend
+ * mode.  If not, falls back to use the dummy cs workaround mode but limit the
+ * clock to 25MHz to make sure it works in all board design.
+ */
+#define HSSPI_XFER_MODE_AUTO		0
+#define HSSPI_XFER_MODE_PREPEND		1
+#define HSSPI_XFER_MODE_DUMMYCS		2
+#define HSSPI_XFER_MODE_MAX			HSSPI_XFER_MODE_DUMMYCS
+
+#define bcm63xx_prepend_printk_on_checkfail(bs, fmt, ...)	\
+do {										\
+	if (bs->xfer_mode == HSSPI_XFER_MODE_AUTO)				\
+		dev_dbg(&bs->pdev->dev, fmt, ##__VA_ARGS__);		\
+	else if (bs->xfer_mode == HSSPI_XFER_MODE_PREPEND)		\
+		dev_err(&bs->pdev->dev, fmt, ##__VA_ARGS__);		\
+} while (0)
 
 struct bcm63xx_hsspi {
 	struct completion done;
 	struct mutex bus_mutex;
-
+	struct mutex msg_mutex;
 	struct platform_device *pdev;
 	struct clk *clk;
 	struct clk *pll_clk;
@@ -109,8 +139,289 @@ struct bcm63xx_hsspi {
 
 	u32 speed_hz;
 	u8 cs_polarity;
+	u32 wait_mode;
+	u32 xfer_mode;
+	u32 prepend_cnt;
+	u8 *prepend_buf;
+};
+
+static ssize_t wait_mode_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(ctrl);
+
+	return sprintf(buf, "%d\n", bs->wait_mode);
+}
+
+static ssize_t wait_mode_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(ctrl);
+	u32 val;
+
+	if (kstrtou32(buf, 10, &val))
+		return -EINVAL;
+
+	if (val > HSSPI_WAIT_MODE_MAX) {
+		dev_warn(dev, "invalid wait mode %u\n", val);
+		return -EINVAL;
+	}
+
+	mutex_lock(&bs->msg_mutex);
+	bs->wait_mode = val;
+	/* clear interrupt status to avoid spurious int on next transfer */
+	if (val == HSSPI_WAIT_MODE_INTR)
+		__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
+	mutex_unlock(&bs->msg_mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(wait_mode);
+
+static ssize_t xfer_mode_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(ctrl);
+
+	return sprintf(buf, "%d\n", bs->xfer_mode);
+}
+
+static ssize_t xfer_mode_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(ctrl);
+	u32 val;
+
+	if (kstrtou32(buf, 10, &val))
+		return -EINVAL;
+
+	if (val > HSSPI_XFER_MODE_MAX) {
+		dev_warn(dev, "invalid xfer mode %u\n", val);
+		return -EINVAL;
+	}
+
+	mutex_lock(&bs->msg_mutex);
+	bs->xfer_mode = val;
+	mutex_unlock(&bs->msg_mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(xfer_mode);
+
+static struct attribute *bcm63xx_hsspi_attrs[] = {
+	&dev_attr_wait_mode.attr,
+	&dev_attr_xfer_mode.attr,
+	NULL,
+};
+
+static const struct attribute_group bcm63xx_hsspi_group = {
+	.attrs = bcm63xx_hsspi_attrs,
 };
 
+static void bcm63xx_hsspi_set_clk(struct bcm63xx_hsspi *bs,
+				  struct spi_device *spi, int hz);
+
+static size_t bcm63xx_hsspi_max_message_size(struct spi_device *spi)
+{
+	return HSSPI_BUFFER_LEN - HSSPI_OPCODE_LEN;
+}
+
+static int bcm63xx_hsspi_wait_cmd(struct bcm63xx_hsspi *bs)
+{
+	unsigned long limit;
+	u32 reg = 0;
+	int rc = 0;
+
+	if (bs->wait_mode == HSSPI_WAIT_MODE_INTR) {
+		if (wait_for_completion_timeout(&bs->done, HZ) == 0)
+			rc = 1;
+	} else {
+		/* polling mode checks for status busy bit */
+		limit = jiffies + msecs_to_jiffies(HSSPI_POLL_STATUS_TIMEOUT_MS);
+
+		while (!time_after(jiffies, limit)) {
+			reg = __raw_readl(bs->regs + HSSPI_PINGPONG_STATUS_REG(0));
+			if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY)
+				cpu_relax();
+			else
+				break;
+		}
+		if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY)
+			rc = 1;
+	}
+
+	if (rc)
+		dev_err(&bs->pdev->dev, "transfer timed out!\n");
+
+	return rc;
+}
+
+static bool bcm63xx_prepare_prepend_transfer(struct spi_master *master,
+					  struct spi_message *msg,
+					  struct spi_transfer *t_prepend)
+{
+
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
+	bool tx_only = false;
+	struct spi_transfer *t;
+
+	/*
+	 * Multiple transfers within a message may be combined into one transfer
+	 * to the controller using its prepend feature. A SPI message is prependable
+	 * only if the following are all true:
+	 *   1. One or more half duplex write transfer in single bit mode
+	 *   2. Optional full duplex read/write at the end
+	 *   3. No delay and cs_change between transfers
+	 */
+	bs->prepend_cnt = 0;
+	list_for_each_entry(t, &msg->transfers, transfer_list) {
+		if ((spi_delay_to_ns(&t->delay, t) > 0) || t->cs_change) {
+			bcm63xx_prepend_printk_on_checkfail(bs,
+				 "Delay or cs change not supported in prepend mode!\n");
+			return false;
+		}
+
+		tx_only = false;
+		if (t->tx_buf && !t->rx_buf) {
+			tx_only = true;
+			if (bs->prepend_cnt + t->len >
+				(HSSPI_BUFFER_LEN - HSSPI_OPCODE_LEN)) {
+				bcm63xx_prepend_printk_on_checkfail(bs,
+					 "exceed max buf len, abort prepending transfers!\n");
+				return false;
+			}
+
+			if (t->tx_nbits > SPI_NBITS_SINGLE &&
+				!list_is_last(&t->transfer_list, &msg->transfers)) {
+				bcm63xx_prepend_printk_on_checkfail(bs,
+					 "multi-bit prepend buf not supported!\n");
+				return false;
+			}
+
+			if (t->tx_nbits == SPI_NBITS_SINGLE) {
+				memcpy(bs->prepend_buf + bs->prepend_cnt, t->tx_buf, t->len);
+				bs->prepend_cnt += t->len;
+			}
+		} else {
+			if (!list_is_last(&t->transfer_list, &msg->transfers)) {
+				bcm63xx_prepend_printk_on_checkfail(bs,
+					 "rx/tx_rx transfer not supported when it is not last one!\n");
+				return false;
+			}
+		}
+
+		if (list_is_last(&t->transfer_list, &msg->transfers)) {
+			memcpy(t_prepend, t, sizeof(struct spi_transfer));
+
+			if (tx_only && t->tx_nbits == SPI_NBITS_SINGLE) {
+				/*
+				 * if the last one is also a single bit tx only transfer, merge
+				 * all of them into one single tx transfer
+				 */
+				t_prepend->len = bs->prepend_cnt;
+				t_prepend->tx_buf = bs->prepend_buf;
+				bs->prepend_cnt = 0;
+			} else {
+				/*
+				 * if the last one is not a tx only transfer or dual tx xfer, all
+				 * the previous transfers are sent through prepend bytes and
+				 * make sure it does not exceed the max prepend len
+				 */
+				if (bs->prepend_cnt > HSSPI_MAX_PREPEND_LEN) {
+					bcm63xx_prepend_printk_on_checkfail(bs,
+						"exceed max prepend len, abort prepending transfers!\n");
+					return false;
+				}
+			}
+		}
+	}
+
+	return true;
+}
+
+static int bcm63xx_hsspi_do_prepend_txrx(struct spi_device *spi,
+					 struct spi_transfer *t)
+{
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
+	unsigned int chip_select = spi->chip_select;
+	u16 opcode = 0, val;
+	const u8 *tx = t->tx_buf;
+	u8 *rx = t->rx_buf;
+	u32 reg = 0;
+
+	/*
+	 * shouldn't happen as we set the max_message_size in the probe.
+	 * but check it again in case some driver does not honor the max size
+	 */
+	if (t->len + bs->prepend_cnt > (HSSPI_BUFFER_LEN - HSSPI_OPCODE_LEN)) {
+		dev_warn(&bs->pdev->dev,
+			 "Prepend message large than fifo size len %d prepend %d\n",
+			 t->len, bs->prepend_cnt);
+		return -EINVAL;
+	}
+
+	bcm63xx_hsspi_set_clk(bs, spi, t->speed_hz);
+
+	if (tx && rx)
+		opcode = HSSPI_OP_READ_WRITE;
+	else if (tx)
+		opcode = HSSPI_OP_WRITE;
+	else if (rx)
+		opcode = HSSPI_OP_READ;
+
+	if ((opcode == HSSPI_OP_READ && t->rx_nbits == SPI_NBITS_DUAL) ||
+	    (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL)) {
+		opcode |= HSSPI_OP_MULTIBIT;
+
+		if (t->rx_nbits == SPI_NBITS_DUAL) {
+			reg |= 1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT;
+			reg |= bs->prepend_cnt << MODE_CTRL_MULTIDATA_RD_STRT_SHIFT;
+		}
+		if (t->tx_nbits == SPI_NBITS_DUAL) {
+			reg |= 1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT;
+			reg |= bs->prepend_cnt << MODE_CTRL_MULTIDATA_WR_STRT_SHIFT;
+		}
+	}
+
+	reg |= bs->prepend_cnt << MODE_CTRL_PREPENDBYTE_CNT_SHIFT;
+	__raw_writel(reg | 0xff,
+		     bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select));
+
+	reinit_completion(&bs->done);
+	if (bs->prepend_cnt)
+		memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, bs->prepend_buf,
+			    bs->prepend_cnt);
+	if (tx)
+		memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN + bs->prepend_cnt, tx,
+			    t->len);
+
+	*(__be16 *)(&val) = cpu_to_be16(opcode | t->len);
+	__raw_writew(val, bs->fifo);
+	/* enable interrupt */
+	if (bs->wait_mode == HSSPI_WAIT_MODE_INTR)
+		__raw_writel(HSSPI_PINGx_CMD_DONE(0), bs->regs + HSSPI_INT_MASK_REG);
+
+	/* start the transfer */
+	reg = chip_select << PINGPONG_CMD_SS_SHIFT |
+	    chip_select << PINGPONG_CMD_PROFILE_SHIFT |
+	    PINGPONG_COMMAND_START_NOW;
+	__raw_writel(reg, bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
+
+	if (bcm63xx_hsspi_wait_cmd(bs))
+		return -ETIMEDOUT;
+
+	if (rx)
+		memcpy_fromio(rx, bs->fifo, t->len);
+
+	return 0;
+}
+
 static void bcm63xx_hsspi_set_cs(struct bcm63xx_hsspi *bs, unsigned int cs,
 				 bool active)
 {
@@ -158,14 +469,16 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
 {
 	struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
 	unsigned int chip_select = spi->chip_select;
-	u16 opcode = 0;
+	u16 opcode = 0, val;
 	int pending = t->len;
 	int step_size = HSSPI_BUFFER_LEN;
 	const u8 *tx = t->tx_buf;
 	u8 *rx = t->rx_buf;
+	u32 reg = 0;
 
 	bcm63xx_hsspi_set_clk(bs, spi, t->speed_hz);
-	bcm63xx_hsspi_set_cs(bs, spi->chip_select, true);
+	if (!t->cs_off)
+		bcm63xx_hsspi_set_cs(bs, spi->chip_select, true);
 
 	if (tx && rx)
 		opcode = HSSPI_OP_READ_WRITE;
@@ -178,11 +491,16 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
 		step_size -= HSSPI_OPCODE_LEN;
 
 	if ((opcode == HSSPI_OP_READ && t->rx_nbits == SPI_NBITS_DUAL) ||
-	    (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL))
+	    (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL)) {
 		opcode |= HSSPI_OP_MULTIBIT;
 
-	__raw_writel(1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT |
-		     1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT | 0xff,
+		if (t->rx_nbits == SPI_NBITS_DUAL)
+			reg |= 1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT;
+		if (t->tx_nbits == SPI_NBITS_DUAL)
+			reg |= 1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT;
+	}
+
+	__raw_writel(reg | 0xff,
 		     bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select));
 
 	while (pending > 0) {
@@ -194,22 +512,21 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
 			tx += curr_step;
 		}
 
-		__raw_writew(opcode | curr_step, bs->fifo);
+		*(__be16 *)(&val) = cpu_to_be16(opcode | curr_step);
+		__raw_writew(val, bs->fifo);
 
 		/* enable interrupt */
-		__raw_writel(HSSPI_PINGx_CMD_DONE(0),
-			     bs->regs + HSSPI_INT_MASK_REG);
+		if (bs->wait_mode == HSSPI_WAIT_MODE_INTR)
+			__raw_writel(HSSPI_PINGx_CMD_DONE(0),
+				     bs->regs + HSSPI_INT_MASK_REG);
 
-		/* start the transfer */
-		__raw_writel(!chip_select << PINGPONG_CMD_SS_SHIFT |
-			     chip_select << PINGPONG_CMD_PROFILE_SHIFT |
-			     PINGPONG_COMMAND_START_NOW,
-			     bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
+		reg =  !chip_select << PINGPONG_CMD_SS_SHIFT |
+			    chip_select << PINGPONG_CMD_PROFILE_SHIFT |
+			    PINGPONG_COMMAND_START_NOW;
+		__raw_writel(reg, bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
 
-		if (wait_for_completion_timeout(&bs->done, HZ) == 0) {
-			dev_err(&bs->pdev->dev, "transfer timed out!\n");
+		if (bcm63xx_hsspi_wait_cmd(bs))
 			return -ETIMEDOUT;
-		}
 
 		if (rx) {
 			memcpy_fromio(rx, bs->fifo, curr_step);
@@ -259,17 +576,17 @@ static int bcm63xx_hsspi_setup(struct spi_device *spi)
 	return 0;
 }
 
-static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
+static int bcm63xx_hsspi_do_dummy_cs_txrx(struct spi_device *spi,
 				      struct spi_message *msg)
 {
-	struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
-	struct spi_transfer *t;
-	struct spi_device *spi = msg->spi;
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
 	int status = -EINVAL;
 	int dummy_cs;
-	u32 reg;
+	bool keep_cs = false;
+	struct spi_transfer *t;
 
-	/* This controller does not support keeping CS active during idle.
+	/*
+	 * This controller does not support keeping CS active during idle.
 	 * To work around this, we use the following ugly hack:
 	 *
 	 * a. Invert the target chip select's polarity so it will be active.
@@ -287,6 +604,21 @@ static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
 	bcm63xx_hsspi_set_cs(bs, dummy_cs, true);
 
 	list_for_each_entry(t, &msg->transfers, transfer_list) {
+		/*
+		 * We are here because one of reasons below:
+		 * a. Message is not prependable and in default auto xfer mode. This mean
+		 *    we fallback to dummy cs mode at maximum 25MHz safe clock rate.
+		 * b. User set to use the dummy cs mode.
+		 */
+		if (bs->xfer_mode == HSSPI_XFER_MODE_AUTO) {
+			if (t->speed_hz > HSSPI_MAX_SYNC_CLOCK) {
+				t->speed_hz = HSSPI_MAX_SYNC_CLOCK;
+				dev_warn_once(&bs->pdev->dev,
+					"Force to dummy cs mode. Reduce the speed to %dHz",
+					t->speed_hz);
+			}
+		}
+
 		status = bcm63xx_hsspi_do_txrx(spi, t);
 		if (status)
 			break;
@@ -295,23 +627,85 @@ static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
 
 		spi_transfer_delay_exec(t);
 
-		if (t->cs_change)
-			bcm63xx_hsspi_set_cs(bs, spi->chip_select, false);
+		/* use existing cs change logic from spi_transfer_one_message */
+		if (t->cs_change) {
+			if (list_is_last(&t->transfer_list, &msg->transfers)) {
+				keep_cs = true;
+			} else {
+				if (!t->cs_off)
+					bcm63xx_hsspi_set_cs(bs, spi->chip_select, false);
+
+				spi_transfer_cs_change_delay_exec(msg, t);
+
+				if (!list_next_entry(t, transfer_list)->cs_off)
+					bcm63xx_hsspi_set_cs(bs, spi->chip_select, true);
+			}
+		} else if (!list_is_last(&t->transfer_list, &msg->transfers) &&
+			   t->cs_off != list_next_entry(t, transfer_list)->cs_off) {
+			bcm63xx_hsspi_set_cs(bs, spi->chip_select, t->cs_off);
+		}
 	}
 
-	mutex_lock(&bs->bus_mutex);
-	reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
-	reg &= ~GLOBAL_CTRL_CS_POLARITY_MASK;
-	reg |= bs->cs_polarity;
-	__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
-	mutex_unlock(&bs->bus_mutex);
+	bcm63xx_hsspi_set_cs(bs, dummy_cs, false);
+	if (status || !keep_cs)
+		bcm63xx_hsspi_set_cs(bs, spi->chip_select, false);
+
+	return status;
+}
 
+static int bcm63xx_hsspi_transfer_one(struct spi_master *master,
+				      struct spi_message *msg)
+{
+	struct bcm63xx_hsspi *bs = spi_master_get_devdata(master);
+	struct spi_device *spi = msg->spi;
+	int status = -EINVAL;
+	bool prependable = false;
+	struct spi_transfer t_prepend;
+
+	mutex_lock(&bs->msg_mutex);
+
+	if (bs->xfer_mode != HSSPI_XFER_MODE_DUMMYCS)
+		prependable = bcm63xx_prepare_prepend_transfer(master, msg, &t_prepend);
+
+	if (prependable) {
+		status = bcm63xx_hsspi_do_prepend_txrx(spi, &t_prepend);
+		msg->actual_length = (t_prepend.len + bs->prepend_cnt);
+	} else {
+		if (bs->xfer_mode == HSSPI_XFER_MODE_PREPEND) {
+			dev_err(&bs->pdev->dev,
+				"User sets prepend mode but msg not prependable! Abort transfer\n");
+			status = -EINVAL;
+		} else
+			status = bcm63xx_hsspi_do_dummy_cs_txrx(spi, msg);
+	}
+
+	mutex_unlock(&bs->msg_mutex);
 	msg->status = status;
 	spi_finalize_current_message(master);
 
 	return 0;
 }
 
+static bool bcm63xx_hsspi_mem_supports_op(struct spi_mem *mem,
+			    const struct spi_mem_op *op)
+{
+	if (!spi_mem_default_supports_op(mem, op))
+		return false;
+
+	/* Controller doesn't support spi mem dual io mode */
+	if ((op->cmd.opcode == SPINOR_OP_READ_1_2_2) ||
+		(op->cmd.opcode == SPINOR_OP_READ_1_2_2_4B) ||
+		(op->cmd.opcode == SPINOR_OP_READ_1_2_2_DTR) ||
+		(op->cmd.opcode == SPINOR_OP_READ_1_2_2_DTR_4B))
+		return false;
+
+	return true;
+}
+
+static const struct spi_controller_mem_ops bcm63xx_hsspi_mem_ops = {
+	.supports_op = bcm63xx_hsspi_mem_supports_op,
+};
+
 static irqreturn_t bcm63xx_hsspi_interrupt(int irq, void *dev_id)
 {
 	struct bcm63xx_hsspi *bs = (struct bcm63xx_hsspi *)dev_id;
@@ -398,10 +792,18 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	bs->regs = regs;
 	bs->speed_hz = rate;
 	bs->fifo = (u8 __iomem *)(bs->regs + HSSPI_FIFO_REG(0));
+	bs->wait_mode = HSSPI_WAIT_MODE_POLLING;
+	bs->prepend_buf = devm_kzalloc(dev, HSSPI_BUFFER_LEN, GFP_KERNEL);
+	if (!bs->prepend_buf) {
+		ret = -ENOMEM;
+		goto out_put_master;
+	}
 
 	mutex_init(&bs->bus_mutex);
+	mutex_init(&bs->msg_mutex);
 	init_completion(&bs->done);
 
+	master->mem_ops = &bcm63xx_hsspi_mem_ops;
 	master->dev.of_node = dev->of_node;
 	if (!dev->of_node)
 		master->bus_num = HSSPI_BUS_NUM;
@@ -415,6 +817,9 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	master->num_chipselect = num_cs;
 	master->setup = bcm63xx_hsspi_setup;
 	master->transfer_one_message = bcm63xx_hsspi_transfer_one;
+	master->max_transfer_size = bcm63xx_hsspi_max_message_size;
+	master->max_message_size = bcm63xx_hsspi_max_message_size;
+
 	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH |
 			    SPI_RX_DUAL | SPI_TX_DUAL;
 	master->bits_per_word_mask = SPI_BPW_MASK(8);
@@ -434,21 +839,33 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	__raw_writel(reg | GLOBAL_CTRL_CLK_GATE_SSOFF,
 		     bs->regs + HSSPI_GLOBAL_CTRL_REG);
 
-	ret = devm_request_irq(dev, irq, bcm63xx_hsspi_interrupt, IRQF_SHARED,
-			       pdev->name, bs);
+	if (irq > 0) {
+		ret = devm_request_irq(dev, irq, bcm63xx_hsspi_interrupt, IRQF_SHARED,
+				       pdev->name, bs);
 
-	if (ret)
-		goto out_put_master;
+		if (ret)
+			goto out_put_master;
+	}
 
 	pm_runtime_enable(&pdev->dev);
 
+	ret = sysfs_create_group(&pdev->dev.kobj, &bcm63xx_hsspi_group);
+	if (ret) {
+		dev_err(&pdev->dev, "couldn't register sysfs group\n");
+		goto out_pm_disable;
+	}
+
 	/* register and we are done */
 	ret = devm_spi_register_master(dev, master);
 	if (ret)
-		goto out_pm_disable;
+		goto out_sysgroup_disable;
+
+	dev_info(dev, "Broadcom 63XX High Speed SPI Controller driver");
 
 	return 0;
 
+out_sysgroup_disable:
+	sysfs_remove_group(&pdev->dev.kobj, &bcm63xx_hsspi_group);
 out_pm_disable:
 	pm_runtime_disable(&pdev->dev);
 out_put_master:
@@ -470,6 +887,7 @@ static int bcm63xx_hsspi_remove(struct platform_device *pdev)
 	__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
 	clk_disable_unprepare(bs->pll_clk);
 	clk_disable_unprepare(bs->clk);
+	sysfs_remove_group(&pdev->dev.kobj, &bcm63xx_hsspi_group);
 
 	return 0;
 }
@@ -516,6 +934,7 @@ static SIMPLE_DEV_PM_OPS(bcm63xx_hsspi_pm_ops, bcm63xx_hsspi_suspend,
 
 static const struct of_device_id bcm63xx_hsspi_of_match[] = {
 	{ .compatible = "brcm,bcm6328-hsspi", },
+	{ .compatible = "brcm,bcmbca-hsspi-v1.0", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bcm63xx_hsspi_of_match);

drivers/spi/spi-bcmbca-hsspi.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Broadcom BCMBCA High Speed SPI Controller driver
+ *
+ * Copyright 2000-2010 Broadcom Corporation
+ * Copyright 2012-2013 Jonas Gorski <jogo@openwrt.org>
+ * Copyright 2019-2022 Broadcom Ltd
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/spi/spi.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/spi/spi-mem.h>
+#include <linux/pm_runtime.h>
+
+#define HSSPI_GLOBAL_CTRL_REG			0x0
+#define GLOBAL_CTRL_CS_POLARITY_SHIFT		0
+#define GLOBAL_CTRL_CS_POLARITY_MASK		0x000000ff
+#define GLOBAL_CTRL_PLL_CLK_CTRL_SHIFT		8
+#define GLOBAL_CTRL_PLL_CLK_CTRL_MASK		0x0000ff00
+#define GLOBAL_CTRL_CLK_GATE_SSOFF		BIT(16)
+#define GLOBAL_CTRL_CLK_POLARITY		BIT(17)
+#define GLOBAL_CTRL_MOSI_IDLE			BIT(18)
+
+#define HSSPI_GLOBAL_EXT_TRIGGER_REG		0x4
+
+#define HSSPI_INT_STATUS_REG			0x8
+#define HSSPI_INT_STATUS_MASKED_REG		0xc
+#define HSSPI_INT_MASK_REG			0x10
+
+#define HSSPI_PINGx_CMD_DONE(i)			BIT((i * 8) + 0)
+#define HSSPI_PINGx_RX_OVER(i)			BIT((i * 8) + 1)
+#define HSSPI_PINGx_TX_UNDER(i)			BIT((i * 8) + 2)
+#define HSSPI_PINGx_POLL_TIMEOUT(i)		BIT((i * 8) + 3)
+#define HSSPI_PINGx_CTRL_INVAL(i)		BIT((i * 8) + 4)
+
+#define HSSPI_INT_CLEAR_ALL			0xff001f1f
+
+#define HSSPI_PINGPONG_COMMAND_REG(x)		(0x80 + (x) * 0x40)
+#define PINGPONG_CMD_COMMAND_MASK		0xf
+#define PINGPONG_COMMAND_NOOP			0
+#define PINGPONG_COMMAND_START_NOW		1
+#define PINGPONG_COMMAND_START_TRIGGER		2
+#define PINGPONG_COMMAND_HALT			3
+#define PINGPONG_COMMAND_FLUSH			4
+#define PINGPONG_CMD_PROFILE_SHIFT		8
+#define PINGPONG_CMD_SS_SHIFT			12
+
+#define HSSPI_PINGPONG_STATUS_REG(x)		(0x84 + (x) * 0x40)
+#define HSSPI_PINGPONG_STATUS_SRC_BUSY          BIT(1)
+
+#define HSSPI_PROFILE_CLK_CTRL_REG(x)		(0x100 + (x) * 0x20)
+#define CLK_CTRL_FREQ_CTRL_MASK			0x0000ffff
+#define CLK_CTRL_SPI_CLK_2X_SEL			BIT(14)
+#define CLK_CTRL_ACCUM_RST_ON_LOOP		BIT(15)
+#define CLK_CTRL_CLK_POLARITY			BIT(16)
+
+#define HSSPI_PROFILE_SIGNAL_CTRL_REG(x)	(0x104 + (x) * 0x20)
+#define SIGNAL_CTRL_LATCH_RISING		BIT(12)
+#define SIGNAL_CTRL_LAUNCH_RISING		BIT(13)
+#define SIGNAL_CTRL_ASYNC_INPUT_PATH		BIT(16)
+
+#define HSSPI_PROFILE_MODE_CTRL_REG(x)		(0x108 + (x) * 0x20)
+#define MODE_CTRL_MULTIDATA_RD_STRT_SHIFT	8
+#define MODE_CTRL_MULTIDATA_WR_STRT_SHIFT	12
+#define MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT	16
+#define MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT	18
+#define MODE_CTRL_MODE_3WIRE			BIT(20)
+#define MODE_CTRL_PREPENDBYTE_CNT_SHIFT		24
+
+#define HSSPI_FIFO_REG(x)			(0x200 + (x) * 0x200)
+
+#define HSSPI_OP_MULTIBIT			BIT(11)
+#define HSSPI_OP_CODE_SHIFT			13
+#define HSSPI_OP_SLEEP				(0 << HSSPI_OP_CODE_SHIFT)
+#define HSSPI_OP_READ_WRITE			(1 << HSSPI_OP_CODE_SHIFT)
+#define HSSPI_OP_WRITE				(2 << HSSPI_OP_CODE_SHIFT)
+#define HSSPI_OP_READ				(3 << HSSPI_OP_CODE_SHIFT)
+#define HSSPI_OP_SETIRQ				(4 << HSSPI_OP_CODE_SHIFT)
+
+#define HSSPI_BUFFER_LEN			512
+#define HSSPI_OPCODE_LEN			2
+
+#define HSSPI_MAX_PREPEND_LEN			15
+
+#define HSSPI_MAX_SYNC_CLOCK			30000000
+
+#define HSSPI_SPI_MAX_CS			8
+#define HSSPI_BUS_NUM				1	/* 0 is legacy SPI */
+#define HSSPI_POLL_STATUS_TIMEOUT_MS	100
+
+#define HSSPI_WAIT_MODE_POLLING		0
+#define HSSPI_WAIT_MODE_INTR		1
+#define HSSPI_WAIT_MODE_MAX			HSSPI_WAIT_MODE_INTR
+
+#define SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT		0
+#define SPIM_CTRL_CS_OVERRIDE_SEL_MASK		0xff
+#define SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT		8
+#define SPIM_CTRL_CS_OVERRIDE_VAL_MASK		0xff
+
+struct bcmbca_hsspi {
+	struct completion done;
+	struct mutex bus_mutex;
+	struct mutex msg_mutex;
+	struct platform_device *pdev;
+	struct clk *clk;
+	struct clk *pll_clk;
+	void __iomem *regs;
+	void __iomem *spim_ctrl;
+	u8 __iomem *fifo;
+	u32 speed_hz;
+	u8 cs_polarity;
+	u32 wait_mode;
+};
+
+static ssize_t wait_mode_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(ctrl);
+
+	return sprintf(buf, "%d\n", bs->wait_mode);
+}
+
+static ssize_t wait_mode_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct spi_controller *ctrl = dev_get_drvdata(dev);
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(ctrl);
+	u32 val;
+
+	if (kstrtou32(buf, 10, &val))
+		return -EINVAL;
+
+	if (val > HSSPI_WAIT_MODE_MAX) {
+		dev_warn(dev, "invalid wait mode %u\n", val);
+		return -EINVAL;
+	}
+
+	mutex_lock(&bs->msg_mutex);
+	bs->wait_mode = val;
+	/* clear interrupt status to avoid spurious int on next transfer */
+	if (val == HSSPI_WAIT_MODE_INTR)
+		__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
+	mutex_unlock(&bs->msg_mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(wait_mode);
+
+static struct attribute *bcmbca_hsspi_attrs[] = {
+	&dev_attr_wait_mode.attr,
+	NULL,
+};
+
+static const struct attribute_group bcmbca_hsspi_group = {
+	.attrs = bcmbca_hsspi_attrs,
+};
+
+static void bcmbca_hsspi_set_cs(struct bcmbca_hsspi *bs, unsigned int cs,
+				 bool active)
+{
+	u32 reg;
+
+	/* No cs orerriden needed for SS7 internal cs on pcm based voice dev */
+	if (cs == 7)
+		return;
+
+	mutex_lock(&bs->bus_mutex);
+
+	reg = __raw_readl(bs->spim_ctrl);
+	if (active)
+		reg |= BIT(cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
+	else
+		reg &= ~BIT(cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
+
+	__raw_writel(reg, bs->spim_ctrl);
+
+	mutex_unlock(&bs->bus_mutex);
+}
+
+static void bcmbca_hsspi_set_clk(struct bcmbca_hsspi *bs,
+				  struct spi_device *spi, int hz)
+{
+	unsigned int profile = spi->chip_select;
+	u32 reg;
+
+	reg = DIV_ROUND_UP(2048, DIV_ROUND_UP(bs->speed_hz, hz));
+	__raw_writel(CLK_CTRL_ACCUM_RST_ON_LOOP | reg,
+		     bs->regs + HSSPI_PROFILE_CLK_CTRL_REG(profile));
+
+	reg = __raw_readl(bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile));
+	if (hz > HSSPI_MAX_SYNC_CLOCK)
+		reg |= SIGNAL_CTRL_ASYNC_INPUT_PATH;
+	else
+		reg &= ~SIGNAL_CTRL_ASYNC_INPUT_PATH;
+	__raw_writel(reg, bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile));
+
+	mutex_lock(&bs->bus_mutex);
+	/* setup clock polarity */
+	reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
+	reg &= ~GLOBAL_CTRL_CLK_POLARITY;
+	if (spi->mode & SPI_CPOL)
+		reg |= GLOBAL_CTRL_CLK_POLARITY;
+	__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
+
+	mutex_unlock(&bs->bus_mutex);
+}
+
+static int bcmbca_hsspi_wait_cmd(struct bcmbca_hsspi *bs, unsigned int cs)
+{
+	unsigned long limit;
+	u32 reg = 0;
+	int rc = 0;
+
+	if (bs->wait_mode == HSSPI_WAIT_MODE_INTR) {
+		if (wait_for_completion_timeout(&bs->done, HZ) == 0)
+			rc = 1;
+	} else {
+		limit = jiffies + msecs_to_jiffies(HSSPI_POLL_STATUS_TIMEOUT_MS);
+
+		while (!time_after(jiffies, limit)) {
+			reg = __raw_readl(bs->regs + HSSPI_PINGPONG_STATUS_REG(0));
+			if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY)
+				cpu_relax();
+			else
+				break;
+		}
+		if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY)
+			rc = 1;
+	}
+
+	if (rc)
+		dev_err(&bs->pdev->dev, "transfer timed out!\n");
+
+	return rc;
+}
+
+static int bcmbca_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t,
+								struct spi_message *msg)
+{
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(spi->master);
+	unsigned int chip_select = spi->chip_select;
+	u16 opcode = 0, val;
+	int pending = t->len;
+	int step_size = HSSPI_BUFFER_LEN;
+	const u8 *tx = t->tx_buf;
+	u8 *rx = t->rx_buf;
+	u32 reg = 0, cs_act = 0;
+
+	bcmbca_hsspi_set_clk(bs, spi, t->speed_hz);
+
+	if (tx && rx)
+		opcode = HSSPI_OP_READ_WRITE;
+	else if (tx)
+		opcode = HSSPI_OP_WRITE;
+	else if (rx)
+		opcode = HSSPI_OP_READ;
+
+	if (opcode != HSSPI_OP_READ)
+		step_size -= HSSPI_OPCODE_LEN;
+
+	if ((opcode == HSSPI_OP_READ && t->rx_nbits == SPI_NBITS_DUAL) ||
+	    (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL)) {
+		opcode |= HSSPI_OP_MULTIBIT;
+
+		if (t->rx_nbits == SPI_NBITS_DUAL)
+			reg |= 1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT;
+		if (t->tx_nbits == SPI_NBITS_DUAL)
+			reg |= 1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT;
+	}
+
+	__raw_writel(reg | 0xff,
+		     bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select));
+
+	while (pending > 0) {
+		int curr_step = min_t(int, step_size, pending);
+
+		reinit_completion(&bs->done);
+		if (tx) {
+			memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, tx, curr_step);
+			tx += curr_step;
+		}
+
+		*(__be16 *)(&val) = cpu_to_be16(opcode | curr_step);
+		__raw_writew(val, bs->fifo);
+
+		/* enable interrupt */
+		if (bs->wait_mode == HSSPI_WAIT_MODE_INTR)
+			__raw_writel(HSSPI_PINGx_CMD_DONE(0),
+			    bs->regs + HSSPI_INT_MASK_REG);
+
+		if (!cs_act) {
+			/* must apply cs signal as close as the cmd starts */
+			bcmbca_hsspi_set_cs(bs, chip_select, true);
+			cs_act = 1;
+		}
+
+		reg = chip_select << PINGPONG_CMD_SS_SHIFT |
+			    chip_select << PINGPONG_CMD_PROFILE_SHIFT |
+			    PINGPONG_COMMAND_START_NOW;
+		__raw_writel(reg, bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
+
+		if (bcmbca_hsspi_wait_cmd(bs, spi->chip_select))
+			return -ETIMEDOUT;
+
+		pending -= curr_step;
+
+		if (rx) {
+			memcpy_fromio(rx, bs->fifo, curr_step);
+			rx += curr_step;
+		}
+	}
+
+	return 0;
+}
+
+static int bcmbca_hsspi_setup(struct spi_device *spi)
+{
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(spi->master);
+	u32 reg;
+
+	reg = __raw_readl(bs->regs +
+			  HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select));
+	reg &= ~(SIGNAL_CTRL_LAUNCH_RISING | SIGNAL_CTRL_LATCH_RISING);
+	if (spi->mode & SPI_CPHA)
+		reg |= SIGNAL_CTRL_LAUNCH_RISING;
+	else
+		reg |= SIGNAL_CTRL_LATCH_RISING;
+	__raw_writel(reg, bs->regs +
+		     HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select));
+
+	mutex_lock(&bs->bus_mutex);
+	reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
+
+	if (spi->mode & SPI_CS_HIGH)
+		reg |= BIT(spi->chip_select);
+	else
+		reg &= ~BIT(spi->chip_select);
+	__raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG);
+
+	if (spi->mode & SPI_CS_HIGH)
+		bs->cs_polarity |= BIT(spi->chip_select);
+	else
+		bs->cs_polarity &= ~BIT(spi->chip_select);
+
+	reg = __raw_readl(bs->spim_ctrl);
+	reg &= ~BIT(spi->chip_select + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
+	if (spi->mode & SPI_CS_HIGH)
+		reg |= BIT(spi->chip_select + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
+	__raw_writel(reg, bs->spim_ctrl);
+
+	mutex_unlock(&bs->bus_mutex);
+
+	return 0;
+}
+
+static int bcmbca_hsspi_transfer_one(struct spi_master *master,
+				      struct spi_message *msg)
+{
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(master);
+	struct spi_transfer *t;
+	struct spi_device *spi = msg->spi;
+	int status = -EINVAL;
+	bool keep_cs = false;
+
+	mutex_lock(&bs->msg_mutex);
+	list_for_each_entry(t, &msg->transfers, transfer_list) {
+		status = bcmbca_hsspi_do_txrx(spi, t, msg);
+		if (status)
+			break;
+
+		spi_transfer_delay_exec(t);
+
+		if (t->cs_change) {
+			if (list_is_last(&t->transfer_list,	&msg->transfers)) {
+				keep_cs = true;
+			} else {
+				if (!t->cs_off)
+					bcmbca_hsspi_set_cs(bs, spi->chip_select, false);
+
+				spi_transfer_cs_change_delay_exec(msg, t);
+
+				if (!list_next_entry(t, transfer_list)->cs_off)
+					bcmbca_hsspi_set_cs(bs, spi->chip_select, true);
+			}
+		} else if (!list_is_last(&t->transfer_list, &msg->transfers) &&
+			   t->cs_off != list_next_entry(t, transfer_list)->cs_off) {
+			bcmbca_hsspi_set_cs(bs, spi->chip_select, t->cs_off);
+		}
+
+		msg->actual_length += t->len;
+	}
+
+	mutex_unlock(&bs->msg_mutex);
+
+	if (status || !keep_cs)
+		bcmbca_hsspi_set_cs(bs, spi->chip_select, false);
+
+	msg->status = status;
+	spi_finalize_current_message(master);
+
+	return 0;
+}
+
+static irqreturn_t bcmbca_hsspi_interrupt(int irq, void *dev_id)
+{
+	struct bcmbca_hsspi *bs = (struct bcmbca_hsspi *)dev_id;
+
+	if (__raw_readl(bs->regs + HSSPI_INT_STATUS_MASKED_REG) == 0)
+		return IRQ_NONE;
+
+	__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
+	__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
+
+	complete(&bs->done);
+
+	return IRQ_HANDLED;
+}
+
+static int bcmbca_hsspi_probe(struct platform_device *pdev)
+{
+	struct spi_master *master;
+	struct bcmbca_hsspi *bs;
+	struct resource *res_mem;
+	void __iomem *spim_ctrl;
+	void __iomem *regs;
+	struct device *dev = &pdev->dev;
+	struct clk *clk, *pll_clk = NULL;
+	int irq, ret;
+	u32 reg, rate, num_cs = HSSPI_SPI_MAX_CS;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hsspi");
+	if (!res_mem)
+		return -EINVAL;
+	regs = devm_ioremap_resource(dev, res_mem);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spim-ctrl");
+	if (!res_mem)
+		return -EINVAL;
+	spim_ctrl = devm_ioremap_resource(dev, res_mem);
+	if (IS_ERR(spim_ctrl))
+		return PTR_ERR(spim_ctrl);
+
+	clk = devm_clk_get(dev, "hsspi");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	ret = clk_prepare_enable(clk);
+	if (ret)
+		return ret;
+
+	rate = clk_get_rate(clk);
+	if (!rate) {
+		pll_clk = devm_clk_get(dev, "pll");
+
+		if (IS_ERR(pll_clk)) {
+			ret = PTR_ERR(pll_clk);
+			goto out_disable_clk;
+		}
+
+		ret = clk_prepare_enable(pll_clk);
+		if (ret)
+			goto out_disable_clk;
+
+		rate = clk_get_rate(pll_clk);
+		if (!rate) {
+			ret = -EINVAL;
+			goto out_disable_pll_clk;
+		}
+	}
+
+	master = spi_alloc_master(&pdev->dev, sizeof(*bs));
+	if (!master) {
+		ret = -ENOMEM;
+		goto out_disable_pll_clk;
+	}
+
+	bs = spi_master_get_devdata(master);
+	bs->pdev = pdev;
+	bs->clk = clk;
+	bs->pll_clk = pll_clk;
+	bs->regs = regs;
+	bs->spim_ctrl = spim_ctrl;
+	bs->speed_hz = rate;
+	bs->fifo = (u8 __iomem *) (bs->regs + HSSPI_FIFO_REG(0));
+	bs->wait_mode = HSSPI_WAIT_MODE_POLLING;
+
+	mutex_init(&bs->bus_mutex);
+	mutex_init(&bs->msg_mutex);
+	init_completion(&bs->done);
+
+	master->dev.of_node = dev->of_node;
+	if (!dev->of_node)
+		master->bus_num = HSSPI_BUS_NUM;
+
+	of_property_read_u32(dev->of_node, "num-cs", &num_cs);
+	if (num_cs > 8) {
+		dev_warn(dev, "unsupported number of cs (%i), reducing to 8\n",
+			 num_cs);
+		num_cs = HSSPI_SPI_MAX_CS;
+	}
+	master->num_chipselect = num_cs;
+	master->setup = bcmbca_hsspi_setup;
+	master->transfer_one_message = bcmbca_hsspi_transfer_one;
+	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH |
+	    SPI_RX_DUAL | SPI_TX_DUAL;
+	master->bits_per_word_mask = SPI_BPW_MASK(8);
+	master->auto_runtime_pm = true;
+
+	platform_set_drvdata(pdev, master);
+
+	/* Initialize the hardware */
+	__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
+
+	/* clean up any pending interrupts */
+	__raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG);
+
+	/* read out default CS polarities */
+	reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG);
+	bs->cs_polarity = reg & GLOBAL_CTRL_CS_POLARITY_MASK;
+	__raw_writel(reg | GLOBAL_CTRL_CLK_GATE_SSOFF,
+		     bs->regs + HSSPI_GLOBAL_CTRL_REG);
+
+	if (irq > 0) {
+		ret = devm_request_irq(dev, irq, bcmbca_hsspi_interrupt, IRQF_SHARED,
+			       pdev->name, bs);
+		if (ret)
+			goto out_put_master;
+	}
+
+	pm_runtime_enable(&pdev->dev);
+
+	ret = sysfs_create_group(&pdev->dev.kobj, &bcmbca_hsspi_group);
+	if (ret) {
+		dev_err(&pdev->dev, "couldn't register sysfs group\n");
+		goto out_pm_disable;
+	}
+
+	/* register and we are done */
+	ret = devm_spi_register_master(dev, master);
+	if (ret)
+		goto out_sysgroup_disable;
+
+	dev_info(dev, "Broadcom BCMBCA High Speed SPI Controller driver");
+
+	return 0;
+
+out_sysgroup_disable:
+	sysfs_remove_group(&pdev->dev.kobj, &bcmbca_hsspi_group);
+out_pm_disable:
+	pm_runtime_disable(&pdev->dev);
+out_put_master:
+	spi_master_put(master);
+out_disable_pll_clk:
+	clk_disable_unprepare(pll_clk);
+out_disable_clk:
+	clk_disable_unprepare(clk);
+	return ret;
+}
+
+static int bcmbca_hsspi_remove(struct platform_device *pdev)
+{
+	struct spi_master *master = platform_get_drvdata(pdev);
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(master);
+
+	/* reset the hardware and block queue progress */
+	__raw_writel(0, bs->regs + HSSPI_INT_MASK_REG);
+	clk_disable_unprepare(bs->pll_clk);
+	clk_disable_unprepare(bs->clk);
+	sysfs_remove_group(&pdev->dev.kobj, &bcmbca_hsspi_group);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bcmbca_hsspi_suspend(struct device *dev)
+{
+	struct spi_master *master = dev_get_drvdata(dev);
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(master);
+
+	spi_master_suspend(master);
+	clk_disable_unprepare(bs->pll_clk);
+	clk_disable_unprepare(bs->clk);
+
+	return 0;
+}
+
+static int bcmbca_hsspi_resume(struct device *dev)
+{
+	struct spi_master *master = dev_get_drvdata(dev);
+	struct bcmbca_hsspi *bs = spi_master_get_devdata(master);
+	int ret;
+
+	ret = clk_prepare_enable(bs->clk);
+	if (ret)
+		return ret;
+
+	if (bs->pll_clk) {
+		ret = clk_prepare_enable(bs->pll_clk);
+		if (ret) {
+			clk_disable_unprepare(bs->clk);
+			return ret;
+		}
+	}
+
+	spi_master_resume(master);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(bcmbca_hsspi_pm_ops, bcmbca_hsspi_suspend,
+			 bcmbca_hsspi_resume);
+
+static const struct of_device_id bcmbca_hsspi_of_match[] = {
+	{ .compatible = "brcm,bcmbca-hsspi-v1.1", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, bcmbca_hsspi_of_match);
+
+static struct platform_driver bcmbca_hsspi_driver = {
+	.driver = {
+		   .name = "bcmbca-hsspi",
+		   .pm = &bcmbca_hsspi_pm_ops,
+		   .of_match_table = bcmbca_hsspi_of_match,
+		   },
+	.probe = bcmbca_hsspi_probe,
+	.remove = bcmbca_hsspi_remove,
+};
+
+module_platform_driver(bcmbca_hsspi_driver);
+
+MODULE_ALIAS("platform:bcmbca_hsspi");
+MODULE_DESCRIPTION("Broadcom BCMBCA High Speed SPI Controller driver");
+MODULE_LICENSE("GPL");

drivers/spi/spi-cadence-quadspi.c

@@ -84,6 +84,7 @@ struct cqspi_st {
 	u32			trigger_address;
 	u32			wr_delay;
 	bool			use_direct_mode;
+	bool			use_direct_mode_wr;
 	struct cqspi_flash_pdata f_pdata[CQSPI_MAX_CHIPSELECT];
 	bool			use_dma_read;
 	u32			pd_dev_id;
@@ -531,6 +532,17 @@ static int cqspi_command_read(struct cqspi_flash_pdata *f_pdata,
 	/* 0 means 1 byte. */
 	reg |= (((n_rx - 1) & CQSPI_REG_CMDCTRL_RD_BYTES_MASK)
 		<< CQSPI_REG_CMDCTRL_RD_BYTES_LSB);
+
+	/* setup ADDR BIT field */
+	if (op->addr.nbytes) {
+		reg |= (0x1 << CQSPI_REG_CMDCTRL_ADDR_EN_LSB);
+		reg |= ((op->addr.nbytes - 1) &
+			CQSPI_REG_CMDCTRL_ADD_BYTES_MASK)
+			<< CQSPI_REG_CMDCTRL_ADD_BYTES_LSB;
+
+		writel(op->addr.val, reg_base + CQSPI_REG_CMDADDRESS);
+	}
+
 	status = cqspi_exec_flash_cmd(cqspi, reg);
 	if (status)
 		return status;
@@ -549,6 +561,9 @@ static int cqspi_command_read(struct cqspi_flash_pdata *f_pdata,
 		memcpy(rxbuf, &reg, read_len);
 	}
 
+	/* Reset CMD_CTRL Reg once command read completes */
+	writel(0, reg_base + CQSPI_REG_CMDCTRL);
+
 	return 0;
 }
 
@@ -613,7 +628,12 @@ static int cqspi_command_write(struct cqspi_flash_pdata *f_pdata,
 		}
 	}
 
-	return cqspi_exec_flash_cmd(cqspi, reg);
+	ret = cqspi_exec_flash_cmd(cqspi, reg);
+
+	/* Reset CMD_CTRL Reg once command write completes */
+	writel(0, reg_base + CQSPI_REG_CMDCTRL);
+
+	return ret;
 }
 
 static int cqspi_read_setup(struct cqspi_flash_pdata *f_pdata,
@@ -937,6 +957,12 @@ static int cqspi_write_setup(struct cqspi_flash_pdata *f_pdata,
 		reg = readl(reg_base + CQSPI_REG_WR_COMPLETION_CTRL);
 		reg |= CQSPI_REG_WR_DISABLE_AUTO_POLL;
 		writel(reg, reg_base + CQSPI_REG_WR_COMPLETION_CTRL);
+		/*
+		 * DAC mode require auto polling as flash needs to be polled
+		 * for write completion in case of bubble in SPI transaction
+		 * due to slow CPU/DMA master.
+		 */
+		cqspi->use_direct_mode_wr = false;
 	}
 
 	reg = readl(reg_base + CQSPI_REG_SIZE);
@@ -1222,7 +1248,7 @@ static ssize_t cqspi_write(struct cqspi_flash_pdata *f_pdata,
 	 * data.
 	 */
 	if (!op->cmd.dtr && cqspi->use_direct_mode &&
-	    ((to + len) <= cqspi->ahb_size)) {
+	    cqspi->use_direct_mode_wr && ((to + len) <= cqspi->ahb_size)) {
 		memcpy_toio(cqspi->ahb_base + to, buf, len);
 		return cqspi_wait_idle(cqspi);
 	}
@@ -1333,7 +1359,13 @@ static int cqspi_mem_process(struct spi_mem *mem, const struct spi_mem_op *op)
 	cqspi_configure(f_pdata, mem->spi->max_speed_hz);
 
 	if (op->data.dir == SPI_MEM_DATA_IN && op->data.buf.in) {
-		if (!op->addr.nbytes)
+	/*
+	 * Performing reads in DAC mode forces to read minimum 4 bytes
+	 * which is unsupported on some flash devices during register
+	 * reads, prefer STIG mode for such small reads.
+	 */
+		if (!op->addr.nbytes ||
+		    op->data.nbytes <= CQSPI_STIG_DATA_LEN_MAX)
 			return cqspi_command_read(f_pdata, op);
 
 		return cqspi_read(f_pdata, op);
@@ -1692,8 +1724,10 @@ static int cqspi_probe(struct platform_device *pdev)
 						cqspi->master_ref_clk_hz);
 		if (ddata->hwcaps_mask & CQSPI_SUPPORTS_OCTAL)
 			master->mode_bits |= SPI_RX_OCTAL | SPI_TX_OCTAL;
-		if (!(ddata->quirks & CQSPI_DISABLE_DAC_MODE))
+		if (!(ddata->quirks & CQSPI_DISABLE_DAC_MODE)) {
 			cqspi->use_direct_mode = true;
+			cqspi->use_direct_mode_wr = true;
+		}
 		if (ddata->quirks & CQSPI_SUPPORT_EXTERNAL_DMA)
 			cqspi->use_dma_read = true;
 		if (ddata->quirks & CQSPI_NO_SUPPORT_WR_COMPLETION)

drivers/spi/spi-geni-qcom.c

@@ -87,6 +87,8 @@ struct spi_geni_master {
 	struct completion cs_done;
 	struct completion cancel_done;
 	struct completion abort_done;
+	struct completion tx_reset_done;
+	struct completion rx_reset_done;
 	unsigned int oversampling;
 	spinlock_t lock;
 	int irq;
@@ -95,6 +97,8 @@ struct spi_geni_master {
 	struct dma_chan *tx;
 	struct dma_chan *rx;
 	int cur_xfer_mode;
+	dma_addr_t tx_se_dma;
+	dma_addr_t rx_se_dma;
 };
 
 static int get_spi_clk_cfg(unsigned int speed_hz,
@@ -129,23 +133,27 @@ static int get_spi_clk_cfg(unsigned int speed_hz,
 	return ret;
 }
 
-static void handle_fifo_timeout(struct spi_master *spi,
+static void handle_se_timeout(struct spi_master *spi,
 				struct spi_message *msg)
 {
 	struct spi_geni_master *mas = spi_master_get_devdata(spi);
 	unsigned long time_left;
 	struct geni_se *se = &mas->se;
+	const struct spi_transfer *xfer;
 
 	spin_lock_irq(&mas->lock);
 	reinit_completion(&mas->cancel_done);
-	writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
+	if (mas->cur_xfer_mode == GENI_SE_FIFO)
+		writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
+
+	xfer = mas->cur_xfer;
 	mas->cur_xfer = NULL;
 	geni_se_cancel_m_cmd(se);
 	spin_unlock_irq(&mas->lock);
 
 	time_left = wait_for_completion_timeout(&mas->cancel_done, HZ);
 	if (time_left)
-		return;
+		goto unmap_if_dma;
 
 	spin_lock_irq(&mas->lock);
 	reinit_completion(&mas->abort_done);
@@ -162,6 +170,39 @@ static void handle_fifo_timeout(struct spi_master *spi,
 		 */
 		mas->abort_failed = true;
 	}
+
+unmap_if_dma:
+	if (mas->cur_xfer_mode == GENI_SE_DMA) {
+		if (xfer) {
+			if (xfer->tx_buf && mas->tx_se_dma) {
+				spin_lock_irq(&mas->lock);
+				reinit_completion(&mas->tx_reset_done);
+				writel(1, se->base + SE_DMA_TX_FSM_RST);
+				spin_unlock_irq(&mas->lock);
+				time_left = wait_for_completion_timeout(&mas->tx_reset_done, HZ);
+				if (!time_left)
+					dev_err(mas->dev, "DMA TX RESET failed\n");
+				geni_se_tx_dma_unprep(se, mas->tx_se_dma, xfer->len);
+			}
+			if (xfer->rx_buf && mas->rx_se_dma) {
+				spin_lock_irq(&mas->lock);
+				reinit_completion(&mas->rx_reset_done);
+				writel(1, se->base + SE_DMA_RX_FSM_RST);
+				spin_unlock_irq(&mas->lock);
+				time_left = wait_for_completion_timeout(&mas->rx_reset_done, HZ);
+				if (!time_left)
+					dev_err(mas->dev, "DMA RX RESET failed\n");
+				geni_se_rx_dma_unprep(se, mas->rx_se_dma, xfer->len);
+			}
+		} else {
+			/*
+			 * This can happen if a timeout happened and we had to wait
+			 * for lock in this function because isr was holding the lock
+			 * and handling transfer completion at that time.
+			 */
+			dev_warn(mas->dev, "Cancel/Abort on completed SPI transfer\n");
+		}
+	}
 }
 
 static void handle_gpi_timeout(struct spi_master *spi, struct spi_message *msg)
@@ -178,7 +219,8 @@ static void spi_geni_handle_err(struct spi_master *spi, struct spi_message *msg)
 
 	switch (mas->cur_xfer_mode) {
 	case GENI_SE_FIFO:
-		handle_fifo_timeout(spi, msg);
+	case GENI_SE_DMA:
+		handle_se_timeout(spi, msg);
 		break;
 	case GENI_GPI_DMA:
 		handle_gpi_timeout(spi, msg);
@@ -250,6 +292,8 @@ static void spi_geni_set_cs(struct spi_device *slv, bool set_flag)
 	}
 
 	mas->cs_flag = set_flag;
+	/* set xfer_mode to FIFO to complete cs_done in isr */
+	mas->cur_xfer_mode = GENI_SE_FIFO;
 	reinit_completion(&mas->cs_done);
 	if (set_flag)
 		geni_se_setup_m_cmd(se, SPI_CS_ASSERT, 0);
@@ -260,7 +304,7 @@ static void spi_geni_set_cs(struct spi_device *slv, bool set_flag)
 	time_left = wait_for_completion_timeout(&mas->cs_done, HZ);
 	if (!time_left) {
 		dev_warn(mas->dev, "Timeout setting chip select\n");
-		handle_fifo_timeout(spi, NULL);
+		handle_se_timeout(spi, NULL);
 	}
 
 exit:
@@ -482,8 +526,12 @@ static bool geni_can_dma(struct spi_controller *ctlr,
 {
 	struct spi_geni_master *mas = spi_master_get_devdata(slv->master);
 
-	/* check if dma is supported */
-	return mas->cur_xfer_mode != GENI_SE_FIFO;
+	/*
+	 * Return true if transfer needs to be mapped prior to
+	 * calling transfer_one which is the case only for GPI_DMA.
+	 * For SE_DMA mode, map/unmap is done in geni_se_*x_dma_prep.
+	 */
+	return mas->cur_xfer_mode == GENI_GPI_DMA;
 }
 
 static int spi_geni_prepare_message(struct spi_master *spi,
@@ -494,6 +542,7 @@ static int spi_geni_prepare_message(struct spi_master *spi,
 
 	switch (mas->cur_xfer_mode) {
 	case GENI_SE_FIFO:
+	case GENI_SE_DMA:
 		if (spi_geni_is_abort_still_pending(mas))
 			return -EBUSY;
 		ret = setup_fifo_params(spi_msg->spi, spi);
@@ -597,7 +646,7 @@ static int spi_geni_init(struct spi_geni_master *mas)
 			break;
 		}
 		/*
-		 * in case of failure to get dma channel, we can still do the
+		 * in case of failure to get gpi dma channel, we can still do the
 		 * FIFO mode, so fallthrough
 		 */
 		dev_warn(mas->dev, "FIFO mode disabled, but couldn't get DMA, fall back to FIFO mode\n");
@@ -716,12 +765,12 @@ static void geni_spi_handle_rx(struct spi_geni_master *mas)
 	mas->rx_rem_bytes -= rx_bytes;
 }
 
-static void setup_fifo_xfer(struct spi_transfer *xfer,
+static int setup_se_xfer(struct spi_transfer *xfer,
 				struct spi_geni_master *mas,
 				u16 mode, struct spi_master *spi)
 {
 	u32 m_cmd = 0;
-	u32 len;
+	u32 len, fifo_size;
 	struct geni_se *se = &mas->se;
 	int ret;
 
@@ -748,7 +797,7 @@ static void setup_fifo_xfer(struct spi_transfer *xfer,
 	/* Speed and bits per word can be overridden per transfer */
 	ret = geni_spi_set_clock_and_bw(mas, xfer->speed_hz);
 	if (ret)
-		return;
+		return ret;
 
 	mas->tx_rem_bytes = 0;
 	mas->rx_rem_bytes = 0;
@@ -772,17 +821,50 @@ static void setup_fifo_xfer(struct spi_transfer *xfer,
 		mas->rx_rem_bytes = xfer->len;
 	}
 
+	/* Select transfer mode based on transfer length */
+	fifo_size = mas->tx_fifo_depth * mas->fifo_width_bits / mas->cur_bits_per_word;
+	mas->cur_xfer_mode = (len <= fifo_size) ? GENI_SE_FIFO : GENI_SE_DMA;
+	geni_se_select_mode(se, mas->cur_xfer_mode);
+
 	/*
 	 * Lock around right before we start the transfer since our
 	 * interrupt could come in at any time now.
 	 */
 	spin_lock_irq(&mas->lock);
 	geni_se_setup_m_cmd(se, m_cmd, FRAGMENTATION);
-	if (m_cmd & SPI_TX_ONLY) {
+
+	if (mas->cur_xfer_mode == GENI_SE_DMA) {
+		if (m_cmd & SPI_RX_ONLY) {
+			ret =  geni_se_rx_dma_prep(se, xfer->rx_buf,
+				xfer->len, &mas->rx_se_dma);
+			if (ret) {
+				dev_err(mas->dev, "Failed to setup Rx dma %d\n", ret);
+				mas->rx_se_dma = 0;
+				goto unlock_and_return;
+			}
+		}
+		if (m_cmd & SPI_TX_ONLY) {
+			ret =  geni_se_tx_dma_prep(se, (void *)xfer->tx_buf,
+				xfer->len, &mas->tx_se_dma);
+			if (ret) {
+				dev_err(mas->dev, "Failed to setup Tx dma %d\n", ret);
+				mas->tx_se_dma = 0;
+				if (m_cmd & SPI_RX_ONLY) {
+					/* Unmap rx buffer if duplex transfer */
+					geni_se_rx_dma_unprep(se, mas->rx_se_dma, xfer->len);
+					mas->rx_se_dma = 0;
+				}
+				goto unlock_and_return;
+			}
+		}
+	} else if (m_cmd & SPI_TX_ONLY) {
 		if (geni_spi_handle_tx(mas))
 			writel(mas->tx_wm, se->base + SE_GENI_TX_WATERMARK_REG);
 	}
+
+unlock_and_return:
 	spin_unlock_irq(&mas->lock);
+	return ret;
 }
 
 static int spi_geni_transfer_one(struct spi_master *spi,
@@ -790,6 +872,7 @@ static int spi_geni_transfer_one(struct spi_master *spi,
 				struct spi_transfer *xfer)
 {
 	struct spi_geni_master *mas = spi_master_get_devdata(spi);
+	int ret;
 
 	if (spi_geni_is_abort_still_pending(mas))
 		return -EBUSY;
@@ -798,9 +881,12 @@ static int spi_geni_transfer_one(struct spi_master *spi,
 	if (!xfer->len)
 		return 0;
 
-	if (mas->cur_xfer_mode == GENI_SE_FIFO) {
-		setup_fifo_xfer(xfer, mas, slv->mode, spi);
-		return 1;
+	if (mas->cur_xfer_mode == GENI_SE_FIFO || mas->cur_xfer_mode == GENI_SE_DMA) {
+		ret = setup_se_xfer(xfer, mas, slv->mode, spi);
+		/* SPI framework expects +ve ret code to wait for transfer complete */
+		if (!ret)
+			ret = 1;
+		return ret;
 	}
 	return setup_gsi_xfer(xfer, mas, slv, spi);
 }
@@ -823,39 +909,70 @@ static irqreturn_t geni_spi_isr(int irq, void *data)
 
 	spin_lock(&mas->lock);
 
-	if ((m_irq & M_RX_FIFO_WATERMARK_EN) || (m_irq & M_RX_FIFO_LAST_EN))
-		geni_spi_handle_rx(mas);
-
-	if (m_irq & M_TX_FIFO_WATERMARK_EN)
-		geni_spi_handle_tx(mas);
-
-	if (m_irq & M_CMD_DONE_EN) {
-		if (mas->cur_xfer) {
+	if (mas->cur_xfer_mode == GENI_SE_FIFO) {
+		if ((m_irq & M_RX_FIFO_WATERMARK_EN) || (m_irq & M_RX_FIFO_LAST_EN))
+			geni_spi_handle_rx(mas);
+
+		if (m_irq & M_TX_FIFO_WATERMARK_EN)
+			geni_spi_handle_tx(mas);
+
+		if (m_irq & M_CMD_DONE_EN) {
+			if (mas->cur_xfer) {
+				spi_finalize_current_transfer(spi);
+				mas->cur_xfer = NULL;
+				/*
+				 * If this happens, then a CMD_DONE came before all the
+				 * Tx buffer bytes were sent out. This is unusual, log
+				 * this condition and disable the WM interrupt to
+				 * prevent the system from stalling due an interrupt
+				 * storm.
+				 *
+				 * If this happens when all Rx bytes haven't been
+				 * received, log the condition. The only known time
+				 * this can happen is if bits_per_word != 8 and some
+				 * registers that expect xfer lengths in num spi_words
+				 * weren't written correctly.
+				 */
+				if (mas->tx_rem_bytes) {
+					writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
+					dev_err(mas->dev, "Premature done. tx_rem = %d bpw%d\n",
+						mas->tx_rem_bytes, mas->cur_bits_per_word);
+				}
+				if (mas->rx_rem_bytes)
+					dev_err(mas->dev, "Premature done. rx_rem = %d bpw%d\n",
+						mas->rx_rem_bytes, mas->cur_bits_per_word);
+			} else {
+				complete(&mas->cs_done);
+			}
+		}
+	} else if (mas->cur_xfer_mode == GENI_SE_DMA) {
+		const struct spi_transfer *xfer = mas->cur_xfer;
+		u32 dma_tx_status = readl_relaxed(se->base + SE_DMA_TX_IRQ_STAT);
+		u32 dma_rx_status = readl_relaxed(se->base + SE_DMA_RX_IRQ_STAT);
+
+		if (dma_tx_status)
+			writel(dma_tx_status, se->base + SE_DMA_TX_IRQ_CLR);
+		if (dma_rx_status)
+			writel(dma_rx_status, se->base + SE_DMA_RX_IRQ_CLR);
+		if (dma_tx_status & TX_DMA_DONE)
+			mas->tx_rem_bytes = 0;
+		if (dma_rx_status & RX_DMA_DONE)
+			mas->rx_rem_bytes = 0;
+		if (dma_tx_status & TX_RESET_DONE)
+			complete(&mas->tx_reset_done);
+		if (dma_rx_status & RX_RESET_DONE)
+			complete(&mas->rx_reset_done);
+		if (!mas->tx_rem_bytes && !mas->rx_rem_bytes && xfer) {
+			if (xfer->tx_buf && mas->tx_se_dma) {
+				geni_se_tx_dma_unprep(se, mas->tx_se_dma, xfer->len);
+				mas->tx_se_dma = 0;
+			}
+			if (xfer->rx_buf && mas->rx_se_dma) {
+				geni_se_rx_dma_unprep(se, mas->rx_se_dma, xfer->len);
+				mas->rx_se_dma = 0;
+			}
 			spi_finalize_current_transfer(spi);
 			mas->cur_xfer = NULL;
-			/*
-			 * If this happens, then a CMD_DONE came before all the
-			 * Tx buffer bytes were sent out. This is unusual, log
-			 * this condition and disable the WM interrupt to
-			 * prevent the system from stalling due an interrupt
-			 * storm.
-			 *
-			 * If this happens when all Rx bytes haven't been
-			 * received, log the condition. The only known time
-			 * this can happen is if bits_per_word != 8 and some
-			 * registers that expect xfer lengths in num spi_words
-			 * weren't written correctly.
-			 */
-			if (mas->tx_rem_bytes) {
-				writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
-				dev_err(mas->dev, "Premature done. tx_rem = %d bpw%d\n",
-					mas->tx_rem_bytes, mas->cur_bits_per_word);
-			}
-			if (mas->rx_rem_bytes)
-				dev_err(mas->dev, "Premature done. rx_rem = %d bpw%d\n",
-					mas->rx_rem_bytes, mas->cur_bits_per_word);
-		} else {
-			complete(&mas->cs_done);
 		}
 	}
 
@@ -949,6 +1066,8 @@ static int spi_geni_probe(struct platform_device *pdev)
 	init_completion(&mas->cs_done);
 	init_completion(&mas->cancel_done);
 	init_completion(&mas->abort_done);
+	init_completion(&mas->tx_reset_done);
+	init_completion(&mas->rx_reset_done);
 	spin_lock_init(&mas->lock);
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, 250);

drivers/spi/spi-intel-pci.c

@@ -60,12 +60,12 @@ static int intel_spi_pci_probe(struct pci_dev *pdev,
 }
 
 static const struct pci_device_id intel_spi_pci_ids[] = {
-	{ PCI_VDEVICE(INTEL, 0x02a4), (unsigned long)&bxt_info },
-	{ PCI_VDEVICE(INTEL, 0x06a4), (unsigned long)&bxt_info },
+	{ PCI_VDEVICE(INTEL, 0x02a4), (unsigned long)&cnl_info },
+	{ PCI_VDEVICE(INTEL, 0x06a4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0x18e0), (unsigned long)&bxt_info },
 	{ PCI_VDEVICE(INTEL, 0x19e0), (unsigned long)&bxt_info },
 	{ PCI_VDEVICE(INTEL, 0x1bca), (unsigned long)&bxt_info },
-	{ PCI_VDEVICE(INTEL, 0x34a4), (unsigned long)&bxt_info },
+	{ PCI_VDEVICE(INTEL, 0x34a4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0x38a4), (unsigned long)&bxt_info },
 	{ PCI_VDEVICE(INTEL, 0x43a4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0x4b24), (unsigned long)&bxt_info },
@@ -75,11 +75,14 @@ static const struct pci_device_id intel_spi_pci_ids[] = {
 	{ PCI_VDEVICE(INTEL, 0x7a24), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0x7aa4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0x7e23), (unsigned long)&cnl_info },
-	{ PCI_VDEVICE(INTEL, 0xa0a4), (unsigned long)&bxt_info },
+	{ PCI_VDEVICE(INTEL, 0x9d24), (unsigned long)&cnl_info },
+	{ PCI_VDEVICE(INTEL, 0x9da4), (unsigned long)&cnl_info },
+	{ PCI_VDEVICE(INTEL, 0xa0a4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0xa1a4), (unsigned long)&bxt_info },
 	{ PCI_VDEVICE(INTEL, 0xa224), (unsigned long)&bxt_info },
+	{ PCI_VDEVICE(INTEL, 0xa2a4), (unsigned long)&cnl_info },
 	{ PCI_VDEVICE(INTEL, 0xa324), (unsigned long)&cnl_info },
-	{ PCI_VDEVICE(INTEL, 0xa3a4), (unsigned long)&bxt_info },
+	{ PCI_VDEVICE(INTEL, 0xa3a4), (unsigned long)&cnl_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(pci, intel_spi_pci_ids);

drivers/spi/spi-intel.c

@@ -104,7 +104,7 @@
 #define BXT_PR				0x84
 #define BXT_SSFSTS_CTL			0xa0
 #define BXT_FREG_NUM			12
-#define BXT_PR_NUM			6
+#define BXT_PR_NUM			5
 
 #define CNL_PR				0x84
 #define CNL_FREG_NUM			6
@@ -1368,14 +1368,14 @@ static int intel_spi_populate_chip(struct intel_spi *ispi)
 	if (!spi_new_device(ispi->master, &chip))
 		return -ENODEV;
 
-	/* Add the second chip if present */
-	if (ispi->master->num_chipselect < 2)
-		return 0;
-
 	ret = intel_spi_read_desc(ispi);
 	if (ret)
 		return ret;
 
+	/* Add the second chip if present */
+	if (ispi->master->num_chipselect < 2)
+		return 0;
+
 	chip.platform_data = NULL;
 	chip.chip_select = 1;
 

drivers/spi/spi-loopback-test.c

@@ -71,6 +71,11 @@ module_param(check_ranges, int, 0644);
 MODULE_PARM_DESC(check_ranges,
 		 "checks rx_buffer pattern are valid");
 
+static unsigned int delay_ms = 100;
+module_param(delay_ms, uint, 0644);
+MODULE_PARM_DESC(delay_ms,
+		 "delay between tests, in milliseconds (default: 100)");
+
 /* the actual tests to execute */
 static struct spi_test spi_tests[] = {
 	{
@@ -1098,7 +1103,8 @@ int spi_test_run_tests(struct spi_device *spi,
 		 * detect the individual tests when using a logic analyzer
 		 * we also add scheduling to avoid potential spi_timeouts...
 		 */
-		mdelay(100);
+		if (delay_ms)
+			mdelay(delay_ms);
 		schedule();
 	}
 

drivers/spi/spi-mem.c

@@ -325,7 +325,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
 	if (!spi_mem_internal_supports_op(mem, op))
 		return -ENOTSUPP;
 
-	if (ctlr->mem_ops && !mem->spi->cs_gpiod) {
+	if (ctlr->mem_ops && ctlr->mem_ops->exec_op && !mem->spi->cs_gpiod) {
 		ret = spi_mem_access_start(mem);
 		if (ret)
 			return ret;

drivers/spi/spi-mtk-snfi.c

@@ -195,6 +195,8 @@
 #define DATA_READ_MODE_X4 2
 #define DATA_READ_MODE_DUAL 5
 #define DATA_READ_MODE_QUAD 6
+#define DATA_READ_LATCH_LAT GENMASK(9, 8)
+#define DATA_READ_LATCH_LAT_S 8
 #define PG_LOAD_CUSTOM_EN BIT(7)
 #define DATARD_CUSTOM_EN BIT(6)
 #define CS_DESELECT_CYC_S 0
@@ -205,6 +207,9 @@
 
 #define SNF_DLY_CTL3 0x548
 #define SFCK_SAM_DLY_S 0
+#define SFCK_SAM_DLY GENMASK(5, 0)
+#define SFCK_SAM_DLY_TOTAL 9
+#define SFCK_SAM_DLY_RANGE 47
 
 #define SNF_STA_CTL1 0x550
 #define CUS_PG_DONE BIT(28)
@@ -297,6 +302,7 @@ struct mtk_snand {
 	struct device *dev;
 	struct clk *nfi_clk;
 	struct clk *pad_clk;
+	struct clk *nfi_hclk;
 	void __iomem *nfi_base;
 	int irq;
 	struct completion op_done;
@@ -1339,7 +1345,16 @@ static int mtk_snand_enable_clk(struct mtk_snand *ms)
 		dev_err(ms->dev, "unable to enable pad clk\n");
 		goto err1;
 	}
+	ret = clk_prepare_enable(ms->nfi_hclk);
+	if (ret) {
+		dev_err(ms->dev, "unable to enable nfi hclk\n");
+		goto err2;
+	}
+
 	return 0;
+
+err2:
+	clk_disable_unprepare(ms->pad_clk);
 err1:
 	clk_disable_unprepare(ms->nfi_clk);
 	return ret;
@@ -1347,6 +1362,7 @@ static int mtk_snand_enable_clk(struct mtk_snand *ms)
 
 static void mtk_snand_disable_clk(struct mtk_snand *ms)
 {
+	clk_disable_unprepare(ms->nfi_hclk);
 	clk_disable_unprepare(ms->pad_clk);
 	clk_disable_unprepare(ms->nfi_clk);
 }
@@ -1357,6 +1373,8 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	const struct of_device_id *dev_id;
 	struct spi_controller *ctlr;
 	struct mtk_snand *ms;
+	unsigned long spi_freq;
+	u32 val = 0;
 	int ret;
 
 	dev_id = of_match_node(mtk_snand_ids, np);
@@ -1401,6 +1419,13 @@ static int mtk_snand_probe(struct platform_device *pdev)
 		goto release_ecc;
 	}
 
+	ms->nfi_hclk = devm_clk_get_optional(&pdev->dev, "nfi_hclk");
+	if (IS_ERR(ms->nfi_hclk)) {
+		ret = PTR_ERR(ms->nfi_hclk);
+		dev_err(&pdev->dev, "unable to get nfi_hclk, err = %d\n", ret);
+		goto release_ecc;
+	}
+
 	ret = mtk_snand_enable_clk(ms);
 	if (ret)
 		goto release_ecc;
@@ -1428,10 +1453,22 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	// switch to SNFI mode
 	nfi_write32(ms, SNF_CFG, SPI_MODE);
 
+	ret = of_property_read_u32(np, "rx-sample-delay-ns", &val);
+	if (!ret)
+		nfi_rmw32(ms, SNF_DLY_CTL3, SFCK_SAM_DLY,
+			  val * SFCK_SAM_DLY_RANGE / SFCK_SAM_DLY_TOTAL);
+
+	ret = of_property_read_u32(np, "mediatek,rx-latch-latency-ns", &val);
+	if (!ret) {
+		spi_freq = clk_get_rate(ms->pad_clk);
+		val = DIV_ROUND_CLOSEST(val, NSEC_PER_SEC / spi_freq);
+		nfi_rmw32(ms, SNF_MISC_CTL, DATA_READ_LATCH_LAT,
+			  val << DATA_READ_LATCH_LAT_S);
+	}
+
 	// setup an initial page format for ops matching page_cache_op template
 	// before ECC is called.
-	ret = mtk_snand_setup_pagefmt(ms, ms->caps->sector_size,
-				      ms->caps->spare_sizes[0]);
+	ret = mtk_snand_setup_pagefmt(ms, SZ_2K, SZ_64);
 	if (ret) {
 		dev_err(ms->dev, "failed to set initial page format\n");
 		goto disable_clk;

drivers/spi/spi-pl022.c

@@ -2091,7 +2091,6 @@ pl022_platform_data_dt_get(struct device *dev)
 		return NULL;
 
 	pd->bus_id = -1;
-	pd->enable_dma = 1;
 	of_property_read_u32(np, "pl022,autosuspend-delay",
 			     &pd->autosuspend_delay);
 	pd->rt = of_property_read_bool(np, "pl022,rt");

drivers/spi/spi-synquacer.c

@@ -472,10 +472,9 @@ static int synquacer_spi_transfer_one(struct spi_master *master,
 		read_fifo(sspi);
 	}
 
-	if (status < 0) {
-		dev_err(sspi->dev, "failed to transfer. status: 0x%x\n",
-			status);
-		return status;
+	if (status == 0) {
+		dev_err(sspi->dev, "failed to transfer. Timeout.\n");
+		return -ETIMEDOUT;
 	}
 
 	return 0;

drivers/spi/spi-xilinx.c

@@ -83,7 +83,7 @@ struct xilinx_spi {
 	void __iomem	*regs;	/* virt. address of the control registers */
 
 	int		irq;
-
+	bool force_irq;		/* force irq to setup master inhibit */
 	u8 *rx_ptr;		/* pointer in the Tx buffer */
 	const u8 *tx_ptr;	/* pointer in the Rx buffer */
 	u8 bytes_per_word;
@@ -248,7 +248,8 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
 	xspi->rx_ptr = t->rx_buf;
 	remaining_words = t->len / xspi->bytes_per_word;
 
-	if (xspi->irq >= 0 &&  remaining_words > xspi->buffer_size) {
+	if (xspi->irq >= 0 &&
+	    (xspi->force_irq || remaining_words > xspi->buffer_size)) {
 		u32 isr;
 		use_irq = true;
 		/* Inhibit irq to avoid spurious irqs on tx_empty*/
@@ -393,6 +394,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 	struct resource *res;
 	int ret, num_cs = 0, bits_per_word;
 	struct spi_master *master;
+	bool force_irq = false;
 	u32 tmp;
 	u8 i;
 
@@ -400,6 +402,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 	if (pdata) {
 		num_cs = pdata->num_chipselect;
 		bits_per_word = pdata->bits_per_word;
+		force_irq = pdata->force_irq;
 	} else {
 		of_property_read_u32(pdev->dev.of_node, "xlnx,num-ss-bits",
 					  &num_cs);
@@ -477,6 +480,8 @@ static int xilinx_spi_probe(struct platform_device *pdev)
 				dev_name(&pdev->dev), xspi);
 		if (ret)
 			return ret;
+
+		xspi->force_irq = force_irq;
 	}
 
 	/* SPI controller initializations */

drivers/spi/spi.c

@@ -604,7 +604,7 @@ static void spi_dev_set_name(struct spi_device *spi)
 	}
 
 	dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->controller->dev),
-		     spi->chip_select);
+		     spi_get_chipselect(spi, 0));
 }
 
 static int spi_dev_check(struct device *dev, void *data)
@@ -613,7 +613,7 @@ static int spi_dev_check(struct device *dev, void *data)
 	struct spi_device *new_spi = data;
 
 	if (spi->controller == new_spi->controller &&
-	    spi->chip_select == new_spi->chip_select)
+	    spi_get_chipselect(spi, 0) == spi_get_chipselect(new_spi, 0))
 		return -EBUSY;
 	return 0;
 }
@@ -638,7 +638,7 @@ static int __spi_add_device(struct spi_device *spi)
 	status = bus_for_each_dev(&spi_bus_type, NULL, spi, spi_dev_check);
 	if (status) {
 		dev_err(dev, "chipselect %d already in use\n",
-				spi->chip_select);
+				spi_get_chipselect(spi, 0));
 		return status;
 	}
 
@@ -649,7 +649,7 @@ static int __spi_add_device(struct spi_device *spi)
 	}
 
 	if (ctlr->cs_gpiods)
-		spi->cs_gpiod = ctlr->cs_gpiods[spi->chip_select];
+		spi_set_csgpiod(spi, 0, ctlr->cs_gpiods[spi_get_chipselect(spi, 0)]);
 
 	/*
 	 * Drivers may modify this initial i/o setup, but will
@@ -692,8 +692,8 @@ int spi_add_device(struct spi_device *spi)
 	int status;
 
 	/* Chipselects are numbered 0..max; validate. */
-	if (spi->chip_select >= ctlr->num_chipselect) {
-		dev_err(dev, "cs%d >= max %d\n", spi->chip_select,
+	if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) {
+		dev_err(dev, "cs%d >= max %d\n", spi_get_chipselect(spi, 0),
 			ctlr->num_chipselect);
 		return -EINVAL;
 	}
@@ -714,8 +714,8 @@ static int spi_add_device_locked(struct spi_device *spi)
 	struct device *dev = ctlr->dev.parent;
 
 	/* Chipselects are numbered 0..max; validate. */
-	if (spi->chip_select >= ctlr->num_chipselect) {
-		dev_err(dev, "cs%d >= max %d\n", spi->chip_select,
+	if (spi_get_chipselect(spi, 0) >= ctlr->num_chipselect) {
+		dev_err(dev, "cs%d >= max %d\n", spi_get_chipselect(spi, 0),
 			ctlr->num_chipselect);
 		return -EINVAL;
 	}
@@ -761,7 +761,7 @@ struct spi_device *spi_new_device(struct spi_controller *ctlr,
 
 	WARN_ON(strlen(chip->modalias) >= sizeof(proxy->modalias));
 
-	proxy->chip_select = chip->chip_select;
+	spi_set_chipselect(proxy, 0, chip->chip_select);
 	proxy->max_speed_hz = chip->max_speed_hz;
 	proxy->mode = chip->mode;
 	proxy->irq = chip->irq;
@@ -970,24 +970,23 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 	 * Avoid calling into the driver (or doing delays) if the chip select
 	 * isn't actually changing from the last time this was called.
 	 */
-	if (!force && ((enable && spi->controller->last_cs == spi->chip_select) ||
-				(!enable && spi->controller->last_cs != spi->chip_select)) &&
+	if (!force && ((enable && spi->controller->last_cs == spi_get_chipselect(spi, 0)) ||
+		       (!enable && spi->controller->last_cs != spi_get_chipselect(spi, 0))) &&
 	    (spi->controller->last_cs_mode_high == (spi->mode & SPI_CS_HIGH)))
 		return;
 
 	trace_spi_set_cs(spi, activate);
 
-	spi->controller->last_cs = enable ? spi->chip_select : -1;
+	spi->controller->last_cs = enable ? spi_get_chipselect(spi, 0) : -1;
 	spi->controller->last_cs_mode_high = spi->mode & SPI_CS_HIGH;
 
-	if ((spi->cs_gpiod || !spi->controller->set_cs_timing) && !activate) {
+	if ((spi_get_csgpiod(spi, 0) || !spi->controller->set_cs_timing) && !activate)
 		spi_delay_exec(&spi->cs_hold, NULL);
-	}
 
 	if (spi->mode & SPI_CS_HIGH)
 		enable = !enable;
 
-	if (spi->cs_gpiod) {
+	if (spi_get_csgpiod(spi, 0)) {
 		if (!(spi->mode & SPI_NO_CS)) {
 			/*
 			 * Historically ACPI has no means of the GPIO polarity and
@@ -1000,10 +999,10 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 			 * into account.
 			 */
 			if (has_acpi_companion(&spi->dev))
-				gpiod_set_value_cansleep(spi->cs_gpiod, !enable);
+				gpiod_set_value_cansleep(spi_get_csgpiod(spi, 0), !enable);
 			else
 				/* Polarity handled by GPIO library */
-				gpiod_set_value_cansleep(spi->cs_gpiod, activate);
+				gpiod_set_value_cansleep(spi_get_csgpiod(spi, 0), activate);
 		}
 		/* Some SPI masters need both GPIO CS & slave_select */
 		if ((spi->controller->flags & SPI_MASTER_GPIO_SS) &&
@@ -1013,7 +1012,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable, bool force)
 		spi->controller->set_cs(spi, !enable);
 	}
 
-	if (spi->cs_gpiod || !spi->controller->set_cs_timing) {
+	if (spi_get_csgpiod(spi, 0) || !spi->controller->set_cs_timing) {
 		if (activate)
 			spi_delay_exec(&spi->cs_setup, NULL);
 		else
@@ -1484,6 +1483,13 @@ static void _spi_transfer_cs_change_delay(struct spi_message *msg,
 	}
 }
 
+void spi_transfer_cs_change_delay_exec(struct spi_message *msg,
+						  struct spi_transfer *xfer)
+{
+	_spi_transfer_cs_change_delay(msg, xfer);
+}
+EXPORT_SYMBOL_GPL(spi_transfer_cs_change_delay_exec);
+
 /*
  * spi_transfer_one_message - Default implementation of transfer_one_message()
  *
@@ -1921,7 +1927,7 @@ void spi_take_timestamp_post(struct spi_controller *ctlr,
 	/* Capture the resolution of the timestamp */
 	xfer->ptp_sts_word_post = progress;
 
-	xfer->timestamped = true;
+	xfer->timestamped = 1;
 }
 EXPORT_SYMBOL_GPL(spi_take_timestamp_post);
 
@@ -2319,7 +2325,7 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
 			nc, rc);
 		return rc;
 	}
-	spi->chip_select = value;
+	spi_set_chipselect(spi, 0, value);
 
 	/* Device speed */
 	if (!of_property_read_u32(nc, "spi-max-frequency", &value))
@@ -2327,6 +2333,8 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
 
 	/* Device CS delays */
 	of_spi_parse_dt_cs_delay(nc, &spi->cs_setup, "spi-cs-setup-delay-ns");
+	of_spi_parse_dt_cs_delay(nc, &spi->cs_hold, "spi-cs-hold-delay-ns");
+	of_spi_parse_dt_cs_delay(nc, &spi->cs_inactive, "spi-cs-inactive-delay-ns");
 
 	return 0;
 }
@@ -2436,7 +2444,7 @@ struct spi_device *spi_new_ancillary_device(struct spi_device *spi,
 	strscpy(ancillary->modalias, "dummy", sizeof(ancillary->modalias));
 
 	/* Use provided chip-select for ancillary device */
-	ancillary->chip_select = chip_select;
+	spi_set_chipselect(ancillary, 0, chip_select);
 
 	/* Take over SPI mode/speed from SPI main device */
 	ancillary->max_speed_hz = spi->max_speed_hz;
@@ -2683,7 +2691,7 @@ struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
 	spi->mode		|= lookup.mode;
 	spi->irq		= lookup.irq;
 	spi->bits_per_word	= lookup.bits_per_word;
-	spi->chip_select	= lookup.chip_select;
+	spi_set_chipselect(spi, 0, lookup.chip_select);
 
 	return spi;
 }
@@ -3064,15 +3072,14 @@ static int spi_controller_check_ops(struct spi_controller *ctlr)
 	 * The controller may implement only the high-level SPI-memory like
 	 * operations if it does not support regular SPI transfers, and this is
 	 * valid use case.
-	 * If ->mem_ops is NULL, we request that at least one of the
-	 * ->transfer_xxx() method be implemented.
+	 * If ->mem_ops or ->mem_ops->exec_op is NULL, we request that at least
+	 * one of the ->transfer_xxx() method be implemented.
 	 */
-	if (ctlr->mem_ops) {
-		if (!ctlr->mem_ops->exec_op)
-			return -EINVAL;
-	} else if (!ctlr->transfer && !ctlr->transfer_one &&
+	if (!ctlr->mem_ops || (ctlr->mem_ops && !ctlr->mem_ops->exec_op)) {
+		if (!ctlr->transfer && !ctlr->transfer_one &&
 		   !ctlr->transfer_one_message) {
-		return -EINVAL;
+			return -EINVAL;
+		}
 	}
 
 	return 0;
@@ -3645,7 +3652,7 @@ static int spi_set_cs_timing(struct spi_device *spi)
 	struct device *parent = spi->controller->dev.parent;
 	int status = 0;
 
-	if (spi->controller->set_cs_timing && !spi->cs_gpiod) {
+	if (spi->controller->set_cs_timing && !spi_get_csgpiod(spi, 0)) {
 		if (spi->controller->auto_runtime_pm) {
 			status = pm_runtime_get_sync(parent);
 			if (status < 0) {
@@ -3850,7 +3857,7 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
 	 * cs_change is set for each transfer.
 	 */
 	if ((spi->mode & SPI_CS_WORD) && (!(ctlr->mode_bits & SPI_CS_WORD) ||
-					  spi->cs_gpiod)) {
+					  spi_get_csgpiod(spi, 0))) {
 		size_t maxsize;
 		int ret;
 

drivers/spi/spidev.c

@@ -116,7 +116,6 @@ spidev_sync(struct spidev_data *spidev, struct spi_message *message)
 		status = spidev_sync_unlocked(spi, message);
 
 	mutex_unlock(&spidev->spi_lock);
-
 	return status;
 }
 
@@ -712,6 +711,8 @@ static const struct spi_device_id spidev_spi_ids[] = {
 	{ .name = "m53cpld" },
 	{ .name = "spi-petra" },
 	{ .name = "spi-authenta" },
+	{ .name = "em3581" },
+	{ .name = "si3210" },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, spidev_spi_ids);
@@ -730,14 +731,16 @@ static int spidev_of_check(struct device *dev)
 }
 
 static const struct of_device_id spidev_dt_ids[] = {
-	{ .compatible = "rohm,dh2228fv", .data = &spidev_of_check },
+	{ .compatible = "cisco,spi-petra", .data = &spidev_of_check },
+	{ .compatible = "dh,dhcom-board", .data = &spidev_of_check },
 	{ .compatible = "lineartechnology,ltc2488", .data = &spidev_of_check },
-	{ .compatible = "semtech,sx1301", .data = &spidev_of_check },
 	{ .compatible = "lwn,bk4", .data = &spidev_of_check },
-	{ .compatible = "dh,dhcom-board", .data = &spidev_of_check },
 	{ .compatible = "menlo,m53cpld", .data = &spidev_of_check },
-	{ .compatible = "cisco,spi-petra", .data = &spidev_of_check },
 	{ .compatible = "micron,spi-authenta", .data = &spidev_of_check },
+	{ .compatible = "rohm,dh2228fv", .data = &spidev_of_check },
+	{ .compatible = "semtech,sx1301", .data = &spidev_of_check },
+	{ .compatible = "silabs,em3581", .data = &spidev_of_check },
+	{ .compatible = "silabs,si3210", .data = &spidev_of_check },
 	{},
 };
 MODULE_DEVICE_TABLE(of, spidev_dt_ids);

include/linux/spi/altera.h

@@ -14,7 +14,7 @@
 
 /**
  * struct altera_spi_platform_data - Platform data of the Altera SPI driver
- * @mode_bits:		Mode bits of SPI master.
+ * @mode_bits:		Mode bits of SPI host.
  * @num_chipselect:	Number of chipselects.
  * @bits_per_word_mask:	bitmask of supported bits_per_word for transfers.
  * @num_devices:	Number of devices that shall be added when the driver
@@ -46,5 +46,5 @@ struct altera_spi {
 };
 
 extern irqreturn_t altera_spi_irq(int irq, void *dev);
-extern void altera_spi_init_master(struct spi_master *master);
+extern void altera_spi_init_host(struct spi_controller *host);
 #endif /* __LINUX_SPI_ALTERA_H */

include/linux/spi/spi.h

@@ -26,6 +26,7 @@ struct spi_controller;
 struct spi_transfer;
 struct spi_controller_mem_ops;
 struct spi_controller_mem_caps;
+struct spi_message;
 
 /*
  * INTERFACES between SPI master-side drivers and SPI slave protocol handlers,
@@ -119,6 +120,8 @@ struct spi_delay {
 
 extern int spi_delay_to_ns(struct spi_delay *_delay, struct spi_transfer *xfer);
 extern int spi_delay_exec(struct spi_delay *_delay, struct spi_transfer *xfer);
+extern void spi_transfer_cs_change_delay_exec(struct spi_message *msg,
+						  struct spi_transfer *xfer);
 
 /**
  * struct spi_device - Controller side proxy for an SPI slave device
@@ -263,7 +266,25 @@ static inline void *spi_get_drvdata(struct spi_device *spi)
 	return dev_get_drvdata(&spi->dev);
 }
 
-struct spi_message;
+static inline u8 spi_get_chipselect(struct spi_device *spi, u8 idx)
+{
+	return spi->chip_select;
+}
+
+static inline void spi_set_chipselect(struct spi_device *spi, u8 idx, u8 chipselect)
+{
+	spi->chip_select = chipselect;
+}
+
+static inline struct gpio_desc *spi_get_csgpiod(struct spi_device *spi, u8 idx)
+{
+	return spi->cs_gpiod;
+}
+
+static inline void spi_set_csgpiod(struct spi_device *spi, u8 idx, struct gpio_desc *csgpiod)
+{
+	spi->cs_gpiod = csgpiod;
+}
 
 /**
  * struct spi_driver - Host side "protocol" driver
@@ -1001,6 +1022,9 @@ struct spi_transfer {
 	void		*rx_buf;
 	unsigned	len;
 
+#define SPI_TRANS_FAIL_NO_START	BIT(0)
+	u16		error;
+
 	dma_addr_t	tx_dma;
 	dma_addr_t	rx_dma;
 	struct sg_table tx_sg;
@@ -1011,6 +1035,7 @@ struct spi_transfer {
 	unsigned	cs_change:1;
 	unsigned	tx_nbits:3;
 	unsigned	rx_nbits:3;
+	unsigned	timestamped:1;
 #define	SPI_NBITS_SINGLE	0x01 /* 1bit transfer */
 #define	SPI_NBITS_DUAL		0x02 /* 2bits transfer */
 #define	SPI_NBITS_QUAD		0x04 /* 4bits transfer */
@@ -1027,12 +1052,7 @@ struct spi_transfer {
 
 	struct ptp_system_timestamp *ptp_sts;
 
-	bool		timestamped;
-
 	struct list_head transfer_list;
-
-#define SPI_TRANS_FAIL_NO_START	BIT(0)
-	u16		error;
 };
 
 /**

include/linux/spi/xilinx_spi.h

@@ -15,6 +15,7 @@ struct xspi_platform_data {
 	u8 bits_per_word;
 	struct spi_board_info *devices;
 	u8 num_devices;
+	bool force_irq;
 };
 
 #endif /* __LINUX_SPI_XILINX_SPI_H */