diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
index d2a937682836..6a7cddb187c1 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
@@ -35,6 +35,7 @@ Required properties:
 Optional properties:
  - reset-gpios: GPIO specification for the RESET input. This is an
 		active low signal to the PCA953x.
+ - vcc-supply:	power supply regulator.
 
 Example: