ASoC: dt-bindings: samsung,snow: convert to dtschema

Convert the audio complex on Google Snow boards with Samsung Exynos SoC
to DT schema format.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220129122430.45694-4-krzysztof.kozlowski@canonical.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/samsung,snow.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/samsung,snow.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Google Snow audio complex with MAX9809x codec
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+  - Sylwester Nawrocki <s.nawrocki@samsung.com>
+
+properties:
+  compatible:
+    enum:
+      - google,snow-audio-max98090
+      - google,snow-audio-max98091
+      - google,snow-audio-max98095
+
+  codec:
+    type: object
+    properties:
+      sound-dai:
+        description: List of phandles to the CODEC and HDMI IP nodes.
+        items:
+          - description: Phandle to the MAX98090, MAX98091 or MAX98095 CODEC.
+          - description: Phandle to the HDMI IP block node.
+    required:
+      - sound-dai
+
+  cpu:
+    type: object
+    properties:
+      sound-dai:
+        description: Phandle to the Samsung I2S controller.
+        maxItems: 1
+    required:
+      - sound-dai
+
+  samsung,audio-codec:
+    description: Phandle to the audio codec.
+    $ref: /schemas/types.yaml#/definitions/phandle
+    deprecated: true
+
+  samsung,i2s-controller:
+    description: Phandle to the Samsung I2S controller.
+    $ref: /schemas/types.yaml#/definitions/phandle
+    deprecated: true
+
+  samsung,model:
+    description: The user-visible name of this sound complex.
+    $ref: /schemas/types.yaml#/definitions/string
+
+required:
+  - compatible
+  - codec
+  - cpu
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "google,snow-audio-max98095";
+        samsung,model = "Snow-I2S-MAX98095";
+
+        cpu {
+            sound-dai = <&i2s0 0>;
+        };
+
+        codec {
+            sound-dai = <&max98095 0>, <&hdmi>;
+        };
+    };

Documentation/devicetree/bindings/sound/snow.txt

-Audio Binding for Snow boards
-
-Required properties:
-- compatible : Can be one of the following,
-			"google,snow-audio-max98090" or
-			"google,snow-audio-max98091" or
-			"google,snow-audio-max98095"
-- samsung,i2s-controller (deprecated): The phandle of the Samsung I2S controller
-- samsung,audio-codec (deprecated): The phandle of the audio codec
-
-Required sub-nodes:
-
- - 'cpu' subnode with a 'sound-dai' property containing the phandle of the I2S
-    controller
- - 'codec' subnode with a 'sound-dai' property containing list of phandles
-    to the CODEC nodes, first entry must be the phandle of the MAX98090,
-    MAX98091 or MAX98095 CODEC (exact device type is indicated by the compatible
-    string) and the second entry must be the phandle of the HDMI IP block node
-
-Optional:
-- samsung,model: The name of the sound-card
-
-Example:
-
-sound {
-		compatible = "google,snow-audio-max98095";
-
-		samsung,model = "Snow-I2S-MAX98095";
-		samsung,i2s-controller = <&i2s0>;
-		samsung,audio-codec = <&max98095>;
-};