Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml
Extension
.yaml
Size
2591 bytes
Lines
112
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/cirrus,cs4271.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Cirrus Logic CS4271 audio CODEC

maintainers:
  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
  - Nikita Shubin <nikita.shubin@maquefel.me>

description:
  The CS4271 is a stereo audio codec. This device supports both the I2C
  and the SPI bus.

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

properties:
  compatible:
    const: cirrus,cs4271

  reg:
    maxItems: 1

  clocks:
    items:
      - description:
          Master clock connected to the MCLK pin if MCLK is an input (i.e. no
          crystal used).

  clock-names:
    items:
      - const: mclk

  spi-cpha: true

  spi-cpol: true

  '#sound-dai-cells':
    const: 0

  reset-gpios:
    description:
      This pin will be deasserted before communication to the codec starts.
    maxItems: 1

  va-supply:
    description: Analog power supply.

  vd-supply:
    description: Digital power supply.

  vl-supply:
    description: Serial Control Port power supply.

  port:
    $ref: audio-graph-port.yaml#
    unevaluatedProperties: false

  cirrus,amuteb-eq-bmutec:
    description:
      When given, the Codec's AMUTEB=BMUTEC flag is enabled.
    type: boolean

  cirrus,enable-soft-reset:
    description: |
      The CS4271 requires its LRCLK and MCLK to be stable before its RESET

Annotation

Implementation Notes