ASoC: Convert cirrus,cs42l51 to json-schema

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/sound/cirrus,cs42l51.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: CS42L51 audio codec DT bindings

maintainers:

  - Olivier Moysan <olivier.moysan@st.com>

properties:

  compatible:

      const: cirrus,cs42l51

  reg:

    maxItems: 1

  "#sound-dai-cells":

    const: 0

  clocks:

    maxItems: 1

  clock-names:

    items:

      - const: MCLK

  reset-gpios:

    maxItems: 1

  VL-supply:

    description: phandle to voltage regulator of digital interface section

  VD-supply:

    description: phandle to voltage regulator of digital internal section

  VA-supply:

    description: phandle to voltage regulator of analog internal section

  VAHP-supply:

    description: phandle to voltage regulator of headphone

required:

  - compatible

  - reg

  - "#sound-dai-cells"

examples:

  - |

    #include <dt-bindings/gpio/gpio.h>

    i2c@0 {

      #address-cells = <1>;

      #size-cells = <0>;

      cs42l51@4a {

        compatible = "cirrus,cs42l51";

        reg = <0x4a>;

        #sound-dai-cells = <0>;

        clocks = <&mclk_prov>;

        clock-names = "MCLK";

        VL-supply = <&reg_audio>;

        VD-supply = <&reg_audio>;

        VA-supply = <&reg_audio>;

        VAHP-supply = <&reg_audio>;

        reset-gpios = <&gpiog 9 GPIO_ACTIVE_LOW>;

      };

    };

...

CS42L51 audio CODEC

Required properties:

  - compatible : "cirrus,cs42l51"

  - reg : the I2C address of the device for I2C.

Optional properties:

  - VL-supply, VD-supply, VA-supply, VAHP-supply: power supplies for the device,

    as covered in Documentation/devicetree/bindings/regulator/regulator.txt.

  - reset-gpios : GPIO specification for the reset pin. If specified, it will be

    deasserted before starting the communication with the codec.

  - clocks : a list of phandles + clock-specifiers, one for each entry in

    clock-names

  - clock-names : must contain "MCLK"

Example:

cs42l51: cs42l51@4a {

	compatible = "cirrus,cs42l51";

	reg = <0x4a>;

	clocks = <&mclk_prov>;

	clock-names = "MCLK";

	VL-supply = <&reg_audio>;

	VD-supply = <&reg_audio>;

	VA-supply = <&reg_audio>;

	VAHP-supply = <&reg_audio>;

	reset-gpios = <&gpiog 9 GPIO_ACTIVE_LOW>;

};