diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.txt b/Documentation/devicetree/bindings/sound/audio-graph-card.txt
index 6e6720aa33f19b03c81db761413db684267acc73..d04ea3b1a1dd5d7710da9c25b76372a8aadb6347 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-card.txt
+++ b/Documentation/devicetree/bindings/sound/audio-graph-card.txt
@@ -17,6 +17,7 @@ Below are same as Simple-Card.
 - bitclock-master
 - bitclock-inversion
 - frame-inversion
+- mclk-fs
 - dai-tdm-slot-num
 - dai-tdm-slot-width
 - clocks / system-clock-frequency