ASoC: Convert jz4740-i2s doc to YAML

Convert the textual binding documentation for the AIC (AC97/I2S
Controller) of Ingenic SoCs to a YAML schema, and add the new compatible
strings in the process.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200306222931.39664-1-paul@crapouillou.netSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/ingenic,aic.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/ingenic,aic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ingenic SoCs AC97 / I2S Controller (AIC) DT bindings
+
+maintainers:
+  - Paul Cercueil <paul@crapouillou.net>
+
+properties:
+  $nodename:
+    pattern: '^audio-controller@'
+
+  compatible:
+    oneOf:
+      - enum:
+        - ingenic,jz4740-i2s
+        - ingenic,jz4760-i2s
+        - ingenic,jz4770-i2s
+        - ingenic,jz4780-i2s
+      - items:
+        - const: ingenic,jz4725b-i2s
+        - const: ingenic,jz4740-i2s
+
+  '#sound-dai-cells':
+    const: 0
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: AIC clock
+      - description: I2S clock
+      - description: EXT clock
+      - description: PLL/2 clock
+
+  clock-names:
+    items:
+      - const: aic
+      - const: i2s
+      - const: ext
+      - const: pll half
+
+  dmas:
+    items:
+      - description: DMA controller phandle and request line for I2S RX
+      - description: DMA controller phandle and request line for I2S TX
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - '#sound-dai-cells'
+
+examples:
+  - |
+    #include <dt-bindings/clock/jz4740-cgu.h>
+    aic: audio-controller@10020000 {
+      compatible = "ingenic,jz4740-i2s";
+      reg = <0x10020000 0x38>;
+
+      #sound-dai-cells = <0>;
+
+      interrupt-parent = <&intc>;
+      interrupts = <18>;
+
+      clocks = <&cgu JZ4740_CLK_AIC>,
+               <&cgu JZ4740_CLK_I2S>,
+               <&cgu JZ4740_CLK_EXT>,
+               <&cgu JZ4740_CLK_PLL_HALF>;
+      clock-names = "aic", "i2s", "ext", "pll half";
+
+      dmas = <&dmac 25 0xffffffff>, <&dmac 24 0xffffffff>;
+      dma-names = "rx", "tx";
+    };

Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt

-Ingenic JZ4740 I2S controller
-
-Required properties:
-- compatible : "ingenic,jz4740-i2s" or "ingenic,jz4780-i2s"
-- reg : I2S registers location and length
-- clocks : AIC and I2S PLL clock specifiers.
-- clock-names: "aic" and "i2s"
-- dmas: DMA controller phandle and DMA request line for I2S Tx and Rx channels
-- dma-names: Must be "tx" and "rx"
-
-Example:
-
-i2s: i2s@10020000 {
-	compatible = "ingenic,jz4740-i2s";
-	reg = <0x10020000 0x94>;
-
-	clocks = <&cgu JZ4740_CLK_AIC>, <&cgu JZ4740_CLK_I2SPLL>;
-	clock-names = "aic", "i2s";
-
-	dmas = <&dma 2>, <&dma 3>;
-	dma-names = "tx", "rx";
-
-};