TOMOYO Linux Cross Reference
Linux/Documentation/devicetree/bindings/clock/cirrus,lochnagar.yaml

   # 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:
      minItems: 1
      maxItems: 19
  
  additionalProperties: false
  
  required:
    - compatible
    - '#clock-cells'

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