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ASoC: dt-bindings: simple-card: document new system-clock-fixed flag

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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: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220120195832.1742271-6-robert.hancock@calian.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Robert Hancock 2022-01-20 13:58:31 -06:00 committed by Mark Brown
parent ce2f7b8d42
commit e9fed03aeb
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Documentation/devicetree/bindings/sound/simple-card.yaml
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@ -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