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-rw-r--r--Documentation/devicetree/bindings/sound/simple-card.yaml11
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