Documentation/devicetree/bindings/sound/richtek,rt9123.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/sound/richtek,rt9123.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/sound/richtek,rt9123.yaml
Extension
.yaml
Size
1513 bytes
Lines
64
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/richtek,rt9123.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Richtek RT9123/RTQ9124 Audio Amplifier

maintainers:
  - ChiYuan Huang <cy_huang@richtek.com>

description:
  RT9123 is a 3.2W mono Class-D audio amplifier that features high efficiency
  and performance with ultra-low quiescent current. The digital audio interface
  support various formats, including I2S, left-justified, right-justified, and
  TDM formats.

  RTQ9124 is an ultra-low output noise, digital input, mono-channel Class-D
  power amplifier that supports a 2.1MHz switching frequency. It integrates
  both DC and AC load diagnostics, as well as real-time load monitoring to
  assess speaker condition. The device operates from 4.5V to 18V and delivers
  up to 30W output power.

allOf:
  - $ref: dai-common.yaml#

properties:
  compatible:
    enum:
      - richtek,rt9123
      - richtek,rtq9124

  reg:
    maxItems: 1

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

  enable-gpios:
    maxItems: 1

required:
  - compatible
  - reg
  - '#sound-dai-cells'

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>

    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        amplifier@5e {
            compatible = "richtek,rt9123";
            reg = <0x5e>;
            enable-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
            #sound-dai-cells = <0>;
        };
    };

Annotation

Implementation Notes