spi: dt-bindings: qcom,spi-qup: convert to dtschema

Convert the Qualcomm Universal Peripheral (QUP) Serial Peripheral
Interface (SPI) bindings to DT Schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220405063451.12011-7-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/spi/qcom,spi-qup.txt

-Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
-
-The QUP core is an AHB slave that provides a common data path (an output FIFO
-and an input FIFO) for serial peripheral interface (SPI) mini-core.
-
-SPI in master mode supports up to 50MHz, up to four chip selects, programmable
-data path from 4 bits to 32 bits and numerous protocol variants.
-
-Required properties:
-- compatible:     Should contain:
-		  "qcom,spi-qup-v1.1.1" for 8660, 8960 and 8064.
-		  "qcom,spi-qup-v2.1.1" for 8974 and later
-		  "qcom,spi-qup-v2.2.1" for 8974 v2 and later.
-
-- reg:            Should contain base register location and length
-- interrupts:     Interrupt number used by this controller
-
-- clocks:         Should contain the core clock and the AHB clock.
-- clock-names:    Should be "core" for the core clock and "iface" for the
-                  AHB clock.
-
-- #address-cells: Number of cells required to define a chip select
-                  address on the SPI bus. Should be set to 1.
-- #size-cells:    Should be zero.
-
-Optional properties:
-- spi-max-frequency: Specifies maximum SPI clock frequency,
-                     Units - Hz. Definition as per
-                     Documentation/devicetree/bindings/spi/spi-bus.txt
-- num-cs:	total number of chipselects
-- cs-gpios:	should specify GPIOs used for chipselects.
-		The gpios will be referred to as reg = <index> in the SPI child
-		nodes.  If unspecified, a single SPI device without a chip
-		select can be used.
-
-- dmas:         Two DMA channel specifiers following the convention outlined
-                in bindings/dma/dma.txt
-- dma-names:    Names for the dma channels, if present. There must be at
-                least one channel named "tx" for transmit and named "rx" for
-                receive.
-
-SPI slave nodes must be children of the SPI master node and can contain
-properties described in Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Example:
-
-	spi_8: spi@f9964000 { /* BLSP2 QUP2 */
-
-		compatible = "qcom,spi-qup-v2";
-		#address-cells = <1>;
-		#size-cells = <0>;
-		reg = <0xf9964000 0x1000>;
-		interrupts = <0 102 0>;
-		spi-max-frequency = <19200000>;
-
-		clocks = <&gcc GCC_BLSP2_QUP2_SPI_APPS_CLK>, <&gcc GCC_BLSP2_AHB_CLK>;
-		clock-names = "core", "iface";
-
-		dmas = <&blsp1_bam 13>, <&blsp1_bam 12>;
-		dma-names = "rx", "tx";
-
-		pinctrl-names = "default";
-		pinctrl-0 = <&spi8_default>;
-
-		device@0 {
-			compatible = "arm,pl022-dummy";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			reg = <0>; /* Chip select 0 */
-			spi-max-frequency = <19200000>;
-			spi-cpol;
-		};
-
-		device@1 {
-			compatible = "arm,pl022-dummy";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			reg = <1>; /* Chip select 1 */
-			spi-max-frequency = <9600000>;
-			spi-cpha;
-		};
-
-		device@2 {
-			compatible = "arm,pl022-dummy";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			reg = <2>; /* Chip select 2 */
-			spi-max-frequency = <19200000>;
-			spi-cpol;
-			spi-cpha;
-		};
-
-		device@3 {
-			compatible = "arm,pl022-dummy";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			reg = <3>; /* Chip select 3 */
-			spi-max-frequency = <19200000>;
-			spi-cpol;
-			spi-cpha;
-			spi-cs-high;
-		};
-	};

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

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/qcom,spi-qup.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
+
+maintainers:
+  - Andy Gross <agross@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description:
+  The QUP core is an AHB slave that provides a common data path (an output FIFO
+  and an input FIFO) for serial peripheral interface (SPI) mini-core.
+
+  SPI in master mode supports up to 50MHz, up to four chip selects,
+  programmable data path from 4 bits to 32 bits and numerous protocol variants.
+
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,spi-qup-v1.1.1 # for 8660, 8960 and 8064
+      - qcom,spi-qup-v2.1.1 # for 8974 and later
+      - qcom,spi-qup-v2.2.1 # for 8974 v2 and later
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: core
+      - const: iface
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - interrupts
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8996.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    spi@7575000 {
+        compatible = "qcom,spi-qup-v2.2.1";
+        reg = <0x07575000 0x600>;
+        interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&gcc GCC_BLSP1_QUP1_SPI_APPS_CLK>,
+                 <&gcc GCC_BLSP1_AHB_CLK>;
+        clock-names = "core", "iface";
+        pinctrl-names = "default", "sleep";
+        pinctrl-0 = <&blsp1_spi1_default>;
+        pinctrl-1 = <&blsp1_spi1_sleep>;
+        dmas = <&blsp1_dma 12>, <&blsp1_dma 13>;
+        dma-names = "tx", "rx";
+        #address-cells = <1>;
+        #size-cells = <0>;
+    };