Documentation / devicetree / bindings / sound / wlf,wm8731.yaml


Based on kernel version 6.9. Page generated on 2024-05-14 10:02 EST.

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/wlf,wm8731.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Wolfson Microelectromics WM8731 audio CODEC

maintainers:
  - patches@opensource.cirrus.com

description: |
  Wolfson Microelectronics WM8731 audio CODEC
 
  Pins on the device (for linking into audio routes):
    * LOUT: Left Channel Line Output
    * ROUT: Right Channel Line Output
    * LHPOUT: Left Channel Headphone Output
    * RHPOUT: Right Channel Headphone Output
    * LLINEIN: Left Channel Line Input
    * RLINEIN: Right Channel Line Input
    * MICIN: Microphone Input

properties:
  compatible:
    enum:
      - wlf,wm8731

  reg:
    maxItems: 1
 
  "#sound-dai-cells":
    const: 0

  clocks:
    description: Clock provider for MCLK pin.
    maxItems: 1

  clock-names:
    items:
      - const: mclk

  AVDD-supply:
    description: Analog power supply regulator on the AVDD pin.

  HPVDD-supply:
    description: Headphone power supply regulator on the HPVDD pin.

  DBVDD-supply:
    description: Digital buffer supply regulator for the DBVDD pin.

  DCVDD-supply:
    description: Digital core supply regulator for the DCVDD pin.

required:
  - reg
  - compatible
  - AVDD-supply
  - HPVDD-supply
  - DBVDD-supply
  - DCVDD-supply

allOf:
  - $ref: dai-common.yaml#
  - $ref: /schemas/spi/spi-peripheral-props.yaml#

unevaluatedProperties: false

examples:
  - |
    spi {
        #address-cells = <1>;
        #size-cells = <0>;
        wm8731_i2c: codec@0 {
            compatible = "wlf,wm8731";
            reg = <0>;
            spi-max-frequency = <12500000>;
 
            AVDD-supply = <&avdd_reg>;
            HPVDD-supply = <&hpvdd_reg>;
            DCVDD-supply = <&dcvdd_reg>;
            DBVDD-supply = <&dbvdd_reg>;
        };
    };
  - |

    i2c {
        #address-cells = <1>;
        #size-cells = <0>;
        wm8731_spi: codec@1b {
            compatible = "wlf,wm8731";
            reg = <0x1b>;
 
            AVDD-supply = <&avdd_reg>;
            HPVDD-supply = <&hpvdd_reg>;
            DCVDD-supply = <&dcvdd_reg>;
            DBVDD-supply = <&dbvdd_reg>;
        };
    };