diff --git a/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt b/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
index 6862028e7b2ecd9b1ef65079b02fc790ef412f3d..203b03eefb688aa0c1ba6e44578e98acc435a2d6 100644
--- a/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
+++ b/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
@@ -9,6 +9,7 @@ Required properties:
 
 Optional properties:
   - reset-gpios: a GPIO spec for the reset pin (active low).
+  - power-supply: phandle of the regulator that provides the supply voltage.
 
 Example:
 &dsi {
@@ -17,5 +18,6 @@ Example:
 		compatible = "orisetech,otm8009a";
 		reg = <0>;
 		reset-gpios = <&gpioh 7 GPIO_ACTIVE_LOW>;
+		power-supply = <&v1v8>;
 	};
 };