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| author |   Robert Hancock <robert.hancock@calian.com> | 2022-01-20 13:58:31 -0600 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2022-01-24 19:45:41 +0000 |
| commit | e9fed03aebacb8873dee8e2edfbce96f27f6c730 (patch) | |
| tree | 555b4e5c80b7f4cdc22cb576546d29a6006bb05a | |
| parent | ASoC: simple-card-utils: Set sysclk on all components (diff) | |
| download | linux-dev-e9fed03aebacb8873dee8e2edfbce96f27f6c730.tar.xz linux-dev-e9fed03aebacb8873dee8e2edfbce96f27f6c730.zip | |
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: 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>
| -rw-r--r-- | Documentation/devicetree/bindings/sound/simple-card.yaml | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/simple-card.yaml b/Documentation/devicetree/bindings/sound/simple-card.yaml index 45fd9fd9eb54..00597dc4f396 100644 --- a/Documentation/devicetree/bindings/sound/simple-card.yaml +++ b/Documentation/devicetree/bindings/sound/simple-card.yaml @@ -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 |