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-rw-r--r--Documentation/devicetree/bindings/sound/imx-audio-card.yaml9
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
index d1816dd061cf..b6f5d486600e 100644
--- a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
+++ b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
@@ -58,14 +58,19 @@ patternProperties:
cpu:
description: Holds subnode which indicates cpu dai.
type: object
+ additionalProperties: false
properties:
- sound-dai: true
+ sound-dai:
+ maxItems: 1
codec:
description: Holds subnode which indicates codec dai.
type: object
+ additionalProperties: false
properties:
- sound-dai: true
+ sound-dai:
+ minItems: 1
+ maxItems: 2
fsl,mclk-equal-bclk:
description: Indicates mclk can be equal to bclk, especially for sai interface