diff --git a/Documentation/devicetree/bindings/sound/max98090.txt b/Documentation/devicetree/bindings/sound/max98090.txt
index 4e3be6682c98..7e1bbd5c27fd 100644
--- a/Documentation/devicetree/bindings/sound/max98090.txt
+++ b/Documentation/devicetree/bindings/sound/max98090.txt
@@ -16,6 +16,8 @@ Optional properties:
 
 - clock-names: Should be "mclk"
 
+- #sound-dai-cells : should be 0.
+
 - maxim,dmic-freq: Frequency at which to clock DMIC
 
 - maxim,micbias: Micbias voltage applies to the analog mic, valid voltages value are: