Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml
Extension
.yaml
Size
2640 bytes
Lines
102
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.

Dependency Surface

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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/usb/qcom,wcd939x-usbss.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm WCD9380/WCD9385 USB SubSystem Altmode/Analog Audio Switch

maintainers:
  - Neil Armstrong <neil.armstrong@linaro.org>

description:
  Qualcomm WCD9390/WCD9395 is a standalone Hi-Fi audio codec IC with a
  functionally separate USB SubSystem for Altmode/Analog Audio Switch
  accessible over an I2C interface.
  The Audio Headphone and Microphone data path between the Codec and the
  USB-C Mux subsystems are external to the IC, thus requiring DT port-endpoint
  graph description to handle USB-C altmode & orientation switching for Audio
  Accessory Mode.

properties:
  compatible:
    oneOf:
      - const: qcom,wcd9390-usbss
      - items:
          - const: qcom,wcd9395-usbss
          - const: qcom,wcd9390-usbss

  reg:
    maxItems: 1

  reset-gpios:
    maxItems: 1

  vdd-supply:
    description: USBSS VDD power supply

  mode-switch: true
  orientation-switch: true

  ports:
    $ref: /schemas/graph.yaml#/properties/ports
    properties:
      port@0:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          A port node to link the WCD939x USB SubSystem to a TypeC controller for the
          purpose of handling altmode muxing and orientation switching.

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          A port node to link the WCD939x USB SubSystem to the Codec SubSystem for the
          purpose of handling USB-C Audio Accessory Mode muxing and orientation switching.

required:
  - compatible
  - reg
  - ports

allOf:
  - $ref: usb-switch.yaml#
  - $ref: usb-switch-ports.yaml#

additionalProperties: false

examples:
  - |
    i2c {
        #address-cells = <1>;

Annotation

Implementation Notes