Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml
Extension
.yaml
Size
2201 bytes
Lines
85
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/qcom,wcd938x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm WCD9380/WCD9385 Audio Codec

maintainers:
  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

description: |
  Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC.
  It has RX and TX Soundwire slave devices.

allOf:
  - $ref: dai-common.yaml#
  - $ref: qcom,wcd93xx-common.yaml#

properties:
  compatible:
    enum:
      - qcom,wcd9380-codec
      - qcom,wcd9385-codec

  mux-controls:
    description: A reference to the audio mux switch for
      switching CTIA/OMTP Headset types
    maxItems: 1

  us-euro-gpios:
    description: GPIO spec for swapping gnd and mic segments
    maxItems: 1
    deprecated: true

required:
  - compatible

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>
    codec {
        compatible = "qcom,wcd9380-codec";
        reset-gpios = <&tlmm 32 GPIO_ACTIVE_LOW>;
        #sound-dai-cells = <1>;
        qcom,tx-device = <&wcd938x_tx>;
        qcom,rx-device = <&wcd938x_rx>;
        qcom,micbias1-microvolt = <1800000>;
        qcom,micbias2-microvolt = <1800000>;
        qcom,micbias3-microvolt = <1800000>;
        qcom,micbias4-microvolt = <1800000>;
        qcom,hphl-jack-type-normally-closed;
        qcom,ground-jack-type-normally-closed;
        qcom,mbhc-buttons-vthreshold-microvolt = <75000 150000 237000 500000 500000 500000 500000 500000>;
        qcom,mbhc-headphone-vthreshold-microvolt = <50000>;
    };

    /* ... */

    soundwire@3210000 {
        #address-cells = <2>;
        #size-cells = <0>;
        reg = <0x03210000 0x2000>;
        wcd938x_rx: codec@0,4 {
            compatible = "sdw20217010d00";
            reg = <0 4>;
            qcom,rx-port-mapping = <1 2 3 4 5>;
        };

Annotation

Implementation Notes