dt-bindings: sound: Convert Samsung Exynos Odroid XU3/XU4 audio complex to dt-schema

Convert Samsung Exynos Odroid XU3/XU4 audio complex with MAX98090 codec
to newer dt-schema format.

'clocks' property is unneeded in the bindings and is left undefined in 'properties'.

'samsung,audio-widgets' and 'samsung,audio-routing' are optional from driver
perspective and they are set as unrequired.
Signed-off-by: Maciej Falkowski <m.falkowski@samsung.com>
[mszyprow: reordered non-standard properties]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191017100529.4183-1-m.szyprowski@samsung.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/samsung,odroid.txt

-Samsung Exynos Odroid XU3/XU4 audio complex with MAX98090 codec
-
-Required properties:
-
- - compatible - "hardkernel,odroid-xu3-audio" - for Odroid XU3 board,
-		"hardkernel,odroid-xu4-audio" - for Odroid XU4 board (deprecated),
-		"samsung,odroid-xu3-audio" - for Odroid XU3 board (deprecated),
-		"samsung,odroid-xu4-audio" - for Odroid XU4 board (deprecated)
- - model - the user-visible name of this sound complex
- - clocks - should contain entries matching clock names in the clock-names
-    property
- - samsung,audio-widgets - this property specifies off-codec audio elements
-   like headphones or speakers, for details see widgets.txt
- - samsung,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 MAX98090's pins (as
-   documented in its binding), and the jacks on the board
-
-   For Odroid X2:
-     "Headphone Jack", "Mic Jack", "DMIC"
-
-   For Odroid U3, XU3:
-     "Headphone Jack", "Speakers"
-
-   For Odroid XU4:
-     no entries
-
-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 corresponding to the MAX98090
-    CODEC and the second entry must be the phandle of the HDMI IP block node
-
-Example:
-
-sound {
-	compatible = "hardkernel,odroid-xu3-audio";
-	model = "Odroid-XU3";
-	samsung,audio-routing =
-		"Headphone Jack", "HPL",
-		"Headphone Jack", "HPR",
-		"IN1", "Mic Jack",
-		"Mic Jack", "MICBIAS";
-
-	cpu {
-		sound-dai = <&i2s0 0>;
-	};
-	codec {
-		sound-dai = <&hdmi>, <&max98090>;
-	};
-};

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

+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/samsung,odroid.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos Odroid XU3/XU4 audio complex with MAX98090 codec
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+  - Sylwester Nawrocki <s.nawrocki@samsung.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: hardkernel,odroid-xu3-audio
+
+      - const: hardkernel,odroid-xu4-audio
+        deprecated: true
+
+      - const: samsung,odroid-xu3-audio
+        deprecated: true
+
+      - const: samsung,odroid-xu4-audio
+        deprecated: true
+
+  model:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: The user-visible name of this sound complex.
+
+  cpu:
+    type: object
+    properties:
+      sound-dai:
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+        description: phandles to the I2S controllers
+
+  codec:
+    type: object
+    properties:
+      sound-dai:
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+        description: |
+          List of phandles to the CODEC nodes,
+          first entry must be corresponding to the MAX98090 CODEC and
+          the second entry must be the phandle of the HDMI IP block node.
+
+  samsung,audio-routing:
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    description: |
+      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 MAX98090's pins (as
+      documented in its binding), and the jacks on the board.
+      For Odroid X2: "Headphone Jack", "Mic Jack", "DMIC"
+      For Odroid U3, XU3: "Headphone Jack", "Speakers"
+      For Odroid XU4: no entries
+
+  samsung,audio-widgets:
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    description: |
+      This property specifies off-codec audio elements
+      like headphones or speakers, for details see widgets.txt
+
+required:
+  - compatible
+  - model
+  - cpu
+  - codec
+
+examples:
+  - |
+    sound {
+        compatible = "hardkernel,odroid-xu3-audio";
+        model = "Odroid-XU3";
+        samsung,audio-routing =
+                "Headphone Jack", "HPL",
+                "Headphone Jack", "HPR",
+                "IN1", "Mic Jack",
+                "Mic Jack", "MICBIAS";
+
+        cpu {
+            sound-dai = <&i2s0 0>;
+        };
+
+        codec {
+            sound-dai = <&hdmi>, <&max98090>;
+        };
+    };
+