ASoC: dt-bindings: atmel,sam9x5-wm8731: Convert to json-schema

Convert atmel sam9x5-wm8731-audio 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/20240206064418.237377-1-dharma.b@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/atmel,sam9x5-wm8731-audio.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,sam9x5-wm8731-audio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel at91sam9x5ek wm8731 audio complex
+
+maintainers:
+  - Dharma Balasubiramani <dharma.b@microchip.com>
+
+description:
+  The audio complex configuration for Atmel at91sam9x5ek with WM8731 audio codec.
+
+properties:
+  compatible:
+    const: atmel,sam9x5-wm8731-audio
+
+  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
+
+        # CODEC Pins
+        - LOUT
+        - ROUT
+        - LHPOUT
+        - RHPOUT
+        - LLINEIN
+        - RLINEIN
+        - MICIN
+
+required:
+  - compatible
+  - atmel,model
+  - atmel,ssc-controller
+  - atmel,audio-codec
+  - atmel,audio-routing
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "atmel,sam9x5-wm8731-audio";
+
+        atmel,model = "wm8731 @ AT91SAM9X5EK";
+
+        atmel,audio-routing =
+                "Headphone Jack", "RHPOUT",
+                "Headphone Jack", "LHPOUT",
+                "LLINEIN", "Line In Jack",
+                "RLINEIN", "Line In Jack";
+
+        atmel,ssc-controller = <&ssc0>;
+        atmel,audio-codec = <&wm8731>;
+    };

Documentation/devicetree/bindings/sound/atmel-sam9x5-wm8731-audio.txt

-* Atmel at91sam9x5ek wm8731 audio complex
-
-Required properties:
-  - compatible: "atmel,sam9x5-wm8731-audio"
-  - atmel,model: The user-visible name of this sound complex.
-  - atmel,ssc-controller: The phandle of the SSC controller
-  - atmel,audio-codec: The phandle of the WM8731 audio codec
-  - 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.
-
-Available audio endpoints for the audio-routing table:
-
-Board connectors:
- * Headphone Jack
- * Line In Jack
-
-wm8731 pins:
-cf Documentation/devicetree/bindings/sound/wlf,wm8731.yaml
-
-Example:
-sound {
-	compatible = "atmel,sam9x5-wm8731-audio";
-
-	atmel,model = "wm8731 @ AT91SAM9X5EK";
-
-	atmel,audio-routing =
-		"Headphone Jack", "RHPOUT",
-		"Headphone Jack", "LHPOUT",
-		"LLINEIN", "Line In Jack",
-		"RLINEIN", "Line In Jack";
-
-	atmel,ssc-controller = <&ssc0>;
-	atmel,audio-codec = <&wm8731>;
-};