ASoC: dt-bindings: ti,pcm1862: convert to dtschema

convert the Texas Instruments PCM186x Universal audio ADC bindings
to DT schema.

The PCM186x codec provides a single digital audio interface. Therefore
this binding adds a reference to dai-common.yaml and defines
'#sound-dai-cells = 0".

Signed-off-by: Ranganath V N <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/sound/pcm186x.txt

···
-Texas Instruments PCM186x Universal Audio ADC
-
-These devices support both I2C and SPI (configured with pin strapping
-on the board).
-
-Required properties:
-
- - compatible : "ti,pcm1862",
-                "ti,pcm1863",
-                "ti,pcm1864",
-                "ti,pcm1865"
-
- - reg : The I2C address of the device for I2C, the chip select
-         number for SPI.
-
- - avdd-supply: Analog core power supply (3.3v)
- - dvdd-supply: Digital core power supply
- - iovdd-supply: Digital IO power supply
-        See regulator/regulator.txt for more information
-
-CODEC input pins:
- * VINL1
- * VINR1
- * VINL2
- * VINR2
- * VINL3
- * VINR3
- * VINL4
- * VINR4
-
-The pins can be used in referring sound node's audio-routing property.
-
-Example:
-
-	pcm186x: audio-codec@4a {
-		compatible = "ti,pcm1865";
-		reg = <0x4a>;
-
-		avdd-supply = <&reg_3v3_analog>;
-		dvdd-supply = <&reg_3v3>;
-		iovdd-supply = <&reg_1v8>;
-	};

Documentation/devicetree/bindings/sound/ti,pcm1862.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/ti,pcm1862.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments PCM186x Universal Audio ADC
+
+maintainers:
+  - Ranganath V N <[e-mail]>
+
+description: |
+  The Texas Instruments PCM186x family are multi-channel audio ADCs
+  that support both I2C and SPI control interfaces, selected by
+  pin strapping. These devices include on-chip programmable gain
+  amplifiers and support differential or single-ended analog inputs.
+
+  CODEC input pins:
+    * VINL1
+    * VINR1
+    * VINL2
+    * VINR2
+    * VINL3
+    * VINR3
+    * VINL4
+    * VINR4
+
+  The pins can be used in referring sound node's audio-routing property.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,pcm1862
+      - ti,pcm1863
+      - ti,pcm1864
+      - ti,pcm1865
+
+  reg:
+    maxItems: 1
+
+  avdd-supply: true
+
+  dvdd-supply: true
+
+  iovdd-supply: true
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - avdd-supply
+  - dvdd-supply
+  - iovdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        audio-codec@4a {
+            compatible = "ti,pcm1865";
+            reg = <0x4a>;
+
+            avdd-supply = <&reg_3v3_analog>;
+            dvdd-supply = <&reg_3v3>;
+            iovdd-supply = <&reg_1v8>;
+        };
+    };