ASoC: dt-bindings: atmel,asoc-wm8904: Convert to json-schema

Convert atmel,asoc-wm8904 devicetree binding to json-schema.
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240207094144.195397-1-dharma.b@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/atmel,asoc-wm8904.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,asoc-wm8904.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel wm8904 audio codec complex
+
+maintainers:
+  - Dharma Balasubiramani <dharma.b@microchip.com>
+
+description:
+  The ASoC audio complex configuration for Atmel with WM8904 audio codec.
+
+properties:
+  compatible:
+    const: atmel,asoc-wm8904
+
+  atmel,model:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: The user-visible name of this sound complex.
+
+  atmel,ssc-controller:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: The phandle of the SSC controller.
+
+  atmel,audio-codec:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: The phandle of the WM8731 audio codec.
+
+  atmel,audio-routing:
+    description:
+      A list of the connections between audio components. Each entry is a pair
+      of strings, the first being the connection's sink, the second being the
+      connection's source.
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    items:
+      enum:
+        # Board Connectors
+        - Headphone Jack
+        - Line In Jack
+        - Mic
+        # WM8904 CODEC Pins
+        - IN1L
+        - IN1R
+        - IN2L
+        - IN2R
+        - IN3L
+        - IN3R
+        - HPOUTL
+        - HPOUTR
+        - LINEOUTL
+        - LINEOUTR
+        - MICBIAS
+
+required:
+  - compatible
+  - atmel,model
+  - atmel,audio-routing
+  - atmel,ssc-controller
+  - atmel,audio-codec
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "atmel,asoc-wm8904";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pck0_as_mck>;
+
+        atmel,model = "wm8904 @ AT91SAM9N12EK";
+
+        atmel,audio-routing =
+                "Headphone Jack", "HPOUTL",
+                "Headphone Jack", "HPOUTR",
+                "IN2L", "Line In Jack",
+                "IN2R", "Line In Jack",
+                "Mic", "MICBIAS",
+                "IN1L", "Mic";
+
+        atmel,ssc-controller = <&ssc0>;
+        atmel,audio-codec = <&wm8904>;
+    };

Documentation/devicetree/bindings/sound/atmel-wm8904.txt

-Atmel ASoC driver with wm8904 audio codec complex
-
-Required properties:
-  - compatible: "atmel,asoc-wm8904"
-  - atmel,model: The user-visible name of this sound complex.
-  - atmel,audio-routing: A list of the connections between audio components.
-    Each entry is a pair of strings, the first being the connection's sink,
-    the second being the connection's source. Valid names for sources and
-    sinks are the WM8904's pins, and the jacks on the board:
-
-    WM8904 pins:
-
-    * IN1L
-    * IN1R
-    * IN2L
-    * IN2R
-    * IN3L
-    * IN3R
-    * HPOUTL
-    * HPOUTR
-    * LINEOUTL
-    * LINEOUTR
-    * MICBIAS
-
-    Board connectors:
-
-    * Headphone Jack
-    * Line In Jack
-    * Mic
-
-  - atmel,ssc-controller: The phandle of the SSC controller
-  - atmel,audio-codec: The phandle of the WM8904 audio codec
-
-Optional properties:
-  - pinctrl-names, pinctrl-0: Please refer to pinctrl-bindings.txt
-
-Example:
-sound {
-	compatible = "atmel,asoc-wm8904";
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pck0_as_mck>;
-
-	atmel,model = "wm8904 @ AT91SAM9N12EK";
-
-	atmel,audio-routing =
-		"Headphone Jack", "HPOUTL",
-		"Headphone Jack", "HPOUTR",
-		"IN2L", "Line In Jack",
-		"IN2R", "Line In Jack",
-		"Mic", "MICBIAS",
-		"IN1L", "Mic";
-
-	atmel,ssc-controller = <&ssc0>;
-	atmel,audio-codec = <&wm8904>;
-};