ASoC: max98090: Add #sound-dai-cells property documentation

MAX98090 CODEC supports 1 input DAI, adding the #sound-dai-cells property
helps to reference the DAI in DT in a standard way.

Signed-off-by: Sylwester Nawrocki <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

diff --git a/Documentation/devicetree/bindings/sound/max98090.txt b/Documentation/devicetree/bindings/sound/max98090.txt
index 4e3be6682c98c97c04ea6e8983edaca1beb22fbe..7e1bbd5c27fd061602bd7683a223def6cbcd5b2e 100644 (file)
--- 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: