dt-bindings: dma: Add Cirrus EP93xx

Add YAML bindings for ep93xx SoC DMA.
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2m.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/cirrus,ep9301-dma-m2m.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic ep93xx SoC DMA controller
+
+maintainers:
+  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
+  - Nikita Shubin <nikita.shubin@maquefel.me>
+
+allOf:
+  - $ref: dma-controller.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: cirrus,ep9301-dma-m2m
+      - items:
+          - enum:
+              - cirrus,ep9302-dma-m2m
+              - cirrus,ep9307-dma-m2m
+              - cirrus,ep9312-dma-m2m
+              - cirrus,ep9315-dma-m2m
+          - const: cirrus,ep9301-dma-m2m
+
+  reg:
+    items:
+      - description: m2m0 channel registers
+      - description: m2m1 channel registers
+
+  clocks:
+    items:
+      - description: m2m0 channel gate clock
+      - description: m2m1 channel gate clock
+
+  clock-names:
+    items:
+      - const: m2m0
+      - const: m2m1
+
+  interrupts:
+    items:
+      - description: m2m0 channel interrupt
+      - description: m2m1 channel interrupt
+
+  '#dma-cells':
+    const: 2
+    description: |
+      The first cell is the unique device channel number as indicated by this
+      table for ep93xx:
+
+      10: SPI controller
+      11: IDE controller
+
+      The second cell is the DMA direction line number:
+
+      1: Memory to device
+      2: Device to memory
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/cirrus,ep9301-syscon.h>
+    dma-controller@80000100 {
+        compatible = "cirrus,ep9301-dma-m2m";
+        reg = <0x80000100 0x0040>,
+              <0x80000140 0x0040>;
+        clocks = <&syscon EP93XX_CLK_M2M0>,
+                 <&syscon EP93XX_CLK_M2M1>;
+        clock-names = "m2m0", "m2m1";
+        interrupt-parent = <&vic0>;
+        interrupts = <17>, <18>;
+        #dma-cells = <2>;
+    };

Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2p.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/cirrus,ep9301-dma-m2p.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic ep93xx SoC M2P DMA controller
+
+maintainers:
+  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
+  - Nikita Shubin <nikita.shubin@maquefel.me>
+
+allOf:
+  - $ref: dma-controller.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: cirrus,ep9301-dma-m2p
+      - items:
+          - enum:
+              - cirrus,ep9302-dma-m2p
+              - cirrus,ep9307-dma-m2p
+              - cirrus,ep9312-dma-m2p
+              - cirrus,ep9315-dma-m2p
+          - const: cirrus,ep9301-dma-m2p
+
+  reg:
+    items:
+      - description: m2p0 channel registers
+      - description: m2p1 channel registers
+      - description: m2p2 channel registers
+      - description: m2p3 channel registers
+      - description: m2p4 channel registers
+      - description: m2p5 channel registers
+      - description: m2p6 channel registers
+      - description: m2p7 channel registers
+      - description: m2p8 channel registers
+      - description: m2p9 channel registers
+
+  clocks:
+    items:
+      - description: m2p0 channel gate clock
+      - description: m2p1 channel gate clock
+      - description: m2p2 channel gate clock
+      - description: m2p3 channel gate clock
+      - description: m2p4 channel gate clock
+      - description: m2p5 channel gate clock
+      - description: m2p6 channel gate clock
+      - description: m2p7 channel gate clock
+      - description: m2p8 channel gate clock
+      - description: m2p9 channel gate clock
+
+  clock-names:
+    items:
+      - const: m2p0
+      - const: m2p1
+      - const: m2p2
+      - const: m2p3
+      - const: m2p4
+      - const: m2p5
+      - const: m2p6
+      - const: m2p7
+      - const: m2p8
+      - const: m2p9
+
+  interrupts:
+    items:
+      - description: m2p0 channel interrupt
+      - description: m2p1 channel interrupt
+      - description: m2p2 channel interrupt
+      - description: m2p3 channel interrupt
+      - description: m2p4 channel interrupt
+      - description: m2p5 channel interrupt
+      - description: m2p6 channel interrupt
+      - description: m2p7 channel interrupt
+      - description: m2p8 channel interrupt
+      - description: m2p9 channel interrupt
+
+  '#dma-cells':
+    const: 2
+    description: |
+      The first cell is the unique device channel number as indicated by this
+      table for ep93xx:
+
+      0: I2S channel 1
+      1: I2S channel 2 (unused)
+      2: AC97 channel 1 (unused)
+      3: AC97 channel 2 (unused)
+      4: AC97 channel 3 (unused)
+      5: I2S channel 3 (unused)
+      6: UART1 (unused)
+      7: UART2 (unused)
+      8: UART3 (unused)
+      9: IRDA (unused)
+
+      The second cell is the DMA direction line number:
+
+      1: Memory to device
+      2: Device to memory
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/cirrus,ep9301-syscon.h>
+    dma-controller@80000000 {
+        compatible = "cirrus,ep9301-dma-m2p";
+        reg = <0x80000000 0x0040>,
+              <0x80000040 0x0040>,
+              <0x80000080 0x0040>,
+              <0x800000c0 0x0040>,
+              <0x80000240 0x0040>,
+              <0x80000200 0x0040>,
+              <0x800002c0 0x0040>,
+              <0x80000280 0x0040>,
+              <0x80000340 0x0040>,
+              <0x80000300 0x0040>;
+        clocks = <&syscon EP93XX_CLK_M2P0>,
+                 <&syscon EP93XX_CLK_M2P1>,
+                 <&syscon EP93XX_CLK_M2P2>,
+                 <&syscon EP93XX_CLK_M2P3>,
+                 <&syscon EP93XX_CLK_M2P4>,
+                 <&syscon EP93XX_CLK_M2P5>,
+                 <&syscon EP93XX_CLK_M2P6>,
+                 <&syscon EP93XX_CLK_M2P7>,
+                 <&syscon EP93XX_CLK_M2P8>,
+                 <&syscon EP93XX_CLK_M2P9>;
+        clock-names = "m2p0", "m2p1",
+                      "m2p2", "m2p3",
+                      "m2p4", "m2p5",
+                      "m2p6", "m2p7",
+                      "m2p8", "m2p9";
+        interrupt-parent = <&vic0>;
+        interrupts = <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>;
+        #dma-cells = <2>;
+    };