Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml
Extension: .yaml
Size: 6267 bytes
Lines: 227
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.

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

Dependency Surface

dt-bindings/sound/cs42l42.h

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/cirrus,cs42l42.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Cirrus Logic CS42L42 audio CODEC

maintainers:
  - patches@opensource.cirrus.com

description:
  The CS42L42 is a low-power audio codec designed for portable applications.
  It provides a high-dynamic range, stereo DAC for audio playback and a mono
  high-dynamic-range ADC for audio capture. There is an integrated headset
  detection block.

properties:
  compatible:
    enum:
      - cirrus,cs42l42
      - cirrus,cs42l83

  reg:
    description:
      The I2C address of the CS42L42.
    maxItems: 1

  VP-supply:
    description:
      VP power supply.

  VCP-supply:
    description:
      Charge pump power supply.

  VD_FILT-supply:
    description:
      FILT+ power supply.

  VL-supply:
    description:
      Logic power supply.

  VA-supply:
    description:
      Analog power supply.

  reset-gpios:
    description:
      This pin will be asserted and then deasserted to reset the
      CS42L42 before communication starts.
    maxItems: 1

  interrupts:
    description:
      Interrupt for CS42L42 IRQ line.
    maxItems: 1

  cirrus,ts-inv:
    description: |
      Sets the behaviour of the jack plug detect switch.

      0 - (Default) Shorted to tip when unplugged, open when plugged.
      This is "inverted tip sense (ITS)" in the datasheet.

      1 - Open when unplugged, shorted to tip when plugged.
      This is "normal tip sense (TS)" in the datasheet.

      The CS42L42_TS_INV_* defines are available for this.

Annotation

Immediate include surface: `dt-bindings/sound/cs42l42.h`.
Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.