ASoC: dt-bindings: wlf,wm8960: Convert to dtschema

Convert the Wolfson WM8960 audio codecs bindings to DT schema.

Changes against original binding:
1. Document clocks and clock-names - already present in DTS and used
by Linux driver.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Acked-by: Charles Keepax <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/sound/wlf,wm8960.yaml

···
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/wlf,wm8960.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Wolfson WM8960 audio codec
+
+maintainers:
+  - [e-mail]
+
+properties:
+  compatible:
+    const: wlf,wm8960
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: mclk
+
+  '#sound-dai-cells':
+    const: 0
+
+  wlf,capless:
+    type: boolean
+    description:
+      If present, OUT3 pin will be enabled and disabled together with HP_L and
+      HP_R pins in response to jack detect events.
+
+  wlf,gpio-cfg:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 2
+    description: |
+      A list of GPIO configuration register values.
+       - gpio-cfg[0]: ALRCGPIO of R9 (Audio interface)
+       - gpio-cfg[1]: {GPIOPOL:GPIOSEL[2:0]} of R48 (Additional Control 4).
+
+  wlf,hp-cfg:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    description: |
+      A list of headphone jack detect configuration register values:
+       - hp-cfg[0]: HPSEL[1:0] of R48 (Additional Control 4).
+       - hp-cfg[1]: {HPSWEN:HPSWPOL} of R24 (Additional Control 2).
+       - hp-cfg[2]: {TOCLKSEL:TOEN} of R23 (Additional Control 1).
+
+  wlf,shared-lrclk:
+    type: boolean
+    description:
+      If present, the LRCM bit of R24 (Additional control 2) gets set,
+      indicating that ADCLRC and DACLRC pins will be disabled only when ADC
+      (Left and Right) and DAC (Left and Right) are disabled.
+      When WM8960 works on synchronize mode and DACLRC pin is used to supply
+      frame clock, it will no frame clock for captrue unless enable DAC to
+      enable DACLRC pin. If shared-lrclk is present, no need to enable DAC for
+      captrue.
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: dai-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        audio-codec@1a {
+            compatible = "wlf,wm8960";
+            reg = <0x1a>;
+            clocks = <&clks 0>;
+            clock-names = "mclk";
+            #sound-dai-cells = <0>;
+            wlf,hp-cfg = <3 2 3>;
+            wlf,gpio-cfg = <1 3>;
+            wlf,shared-lrclk;
+        };
+    };

Documentation/devicetree/bindings/sound/wm8960.txt

···
-WM8960 audio CODEC
-
-This device supports I2C only.
-
-Required properties:
-
-  - compatible : "wlf,wm8960"
-
-  - reg : the I2C address of the device.
-
-Optional properties:
-  - wlf,shared-lrclk: This is a boolean property. If present, the LRCM bit of
-	R24 (Additional control 2) gets set, indicating that ADCLRC and DACLRC pins
-	will be disabled only when ADC (Left and Right) and DAC (Left and Right)
-	are disabled.
-	When wm8960 works on synchronize mode and DACLRC pin is used to supply
-	frame clock, it will no frame clock for captrue unless enable DAC to enable
-	DACLRC pin. If shared-lrclk is present, no need to enable DAC for captrue.
-
-  - wlf,capless: This is a boolean property. If present, OUT3 pin will be
-	enabled and disabled together with HP_L and HP_R pins in response to jack
-	detect events.
-
-  - wlf,hp-cfg: A list of headphone jack detect configuration register values.
-		The list must be 3 entries long.
-		hp-cfg[0]: HPSEL[1:0] of R48 (Additional Control 4).
-		hp-cfg[1]: {HPSWEN:HPSWPOL} of R24 (Additional Control 2).
-		hp-cfg[2]: {TOCLKSEL:TOEN} of R23 (Additional Control 1).
-
-  - wlf,gpio-cfg: A list of GPIO configuration register values.
-		  The list must be 2 entries long.
-		  gpio-cfg[0]: ALRCGPIO of R9 (Audio interface)
-		  gpio-cfg[1]: {GPIOPOL:GPIOSEL[2:0]} of R48 (Additional Control 4).
-
-Example:
-
-wm8960: codec@1a {
-	compatible = "wlf,wm8960";
-	reg = <0x1a>;
-
-	wlf,shared-lrclk;
-};