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-rw-r--r--Documentation/devicetree/bindings/sound/renesas,rsnd.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 1173395b5e5c..776cf6aa8db9 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -30,6 +30,8 @@ Required properties:
- rcar_sound,dai : DAI contents.
The number of DAI subnode should be same as HW.
see below for detail.
+- #sound-dai-cells : it must be 0 if your system is using single DAI
+ it must be 1 if your system is using multi DAI
SSI subnode properties:
- interrupts : Should contain SSI interrupt for PIO transfer
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