Documentation/devicetree/bindings/clock/cirrus,lochnagar.yaml

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

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/clock/cirrus,lochnagar.yaml
Extension
.yaml
Size
2610 bytes
Lines
79
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/clock/cirrus,lochnagar.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Cirrus Logic Lochnagar Audio Development Board

maintainers:
  - patches@opensource.cirrus.com

description: |
  Lochnagar is an evaluation and development board for Cirrus Logic
  Smart CODEC and Amp devices. It allows the connection of most Cirrus
  Logic devices on mini-cards, as well as allowing connection of various
  application processor systems to provide a full evaluation platform.
  Audio system topology, clocking and power can all be controlled through
  the Lochnagar, allowing the device under test to be used in a variety of
  possible use cases.

  This binding document describes the binding for the clock portion of the
  driver.

  Also see these documents for generic binding information:
    [1] Clock : ../clock/clock-bindings.txt

  And these for relevant defines:
    [2] include/dt-bindings/clock/lochnagar.h

  This binding must be part of the Lochnagar MFD binding:
    [3] ../mfd/cirrus,lochnagar.yaml

properties:
  compatible:
    enum:
      - cirrus,lochnagar1-clk
      - cirrus,lochnagar2-clk

  '#clock-cells':
    description:
      The first cell indicates the clock number, see [2] for available
      clocks and [1].
    const: 1

  clock-names:
    items:
      enum:
        - ln-cdc-clkout # Output clock from CODEC card.
        - ln-dsp-clkout # Output clock from DSP card.
        - ln-gf-mclk1 # Optional input clock from host system.
        - ln-gf-mclk2 # Optional input clock from host system.
        - ln-gf-mclk3 # Optional input clock from host system.
        - ln-gf-mclk4 # Optional input clock from host system.
        - ln-psia1-mclk # Optional input clock from external connector.
        - ln-psia2-mclk # Optional input clock from external connector.
        - ln-spdif-mclk # Optional input clock from SPDIF.
        - ln-spdif-clkout # Optional input clock from SPDIF.
        - ln-adat-mclk # Optional input clock from ADAT.
        - ln-pmic-32k # On board fixed clock.
        - ln-clk-12m # On board fixed clock.
        - ln-clk-11m # On board fixed clock.
        - ln-clk-24m # On board fixed clock.
        - ln-clk-22m # On board fixed clock.
        - ln-clk-8m # On board fixed clock.
        - ln-usb-clk-24m # On board fixed clock.
        - ln-usb-clk-12m # On board fixed clock.
    minItems: 1
    maxItems: 19

  clocks:

Annotation

Implementation Notes