Unverified Commit e9fed03a authored by Robert Hancock's avatar Robert Hancock Committed by Mark Brown
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ASoC: dt-bindings: simple-card: document new system-clock-fixed flag 



Document the new system-clock-fixed flag, which can be used to specify
that the driver cannot or should not allow the clock frequency of the
mapped clock to be modified.

Signed-off-by: default avatarRobert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220120195832.1742271-6-robert.hancock@calian.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ce2f7b8d

Documentation/devicetree/bindings/sound/simple-card.yaml

+11 −0
Original line number Diff line number Diff line
@@ -48,6 +48,15 @@ definitions: 
      It is useful for some aCPUs with fixed clocks.

    $ref: /schemas/types.yaml#/definitions/flag



  system-clock-fixed:

    description: |

      Specifies that the clock frequency should not be modified.

      Implied when system-clock-frequency is specified, but can be used when

      a clock is mapped to the device whose frequency cannot or should not be

      changed. When mclk-fs is also specified, this restricts the device to a

      single fixed sampling rate.

    $ref: /schemas/types.yaml#/definitions/flag



  mclk-fs:

    description: |

      Multiplication factor between stream rate and codec mclk.
@@ -134,6 +143,8 @@ definitions: 
        $ref: "#/definitions/system-clock-frequency"

      system-clock-direction-out:

        $ref: "#/definitions/system-clock-direction-out"

      system-clock-fixed:

        $ref: "#/definitions/system-clock-fixed"

    required:

      - sound-dai