diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
index 289967973ff57b5643471a2cb82abd1ad3b958b5..482f815363ef8cc0eac9567a12a7db9cf71cf246 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.txt
+++ b/Documentation/devicetree/bindings/usb/dwc2.txt
@@ -18,6 +18,8 @@ Optional properties:
 - phys: phy provider specifier
 - phy-names: shall be "usb2-phy"
 Refer to phy/phy-bindings.txt for generic phy consumer properties
+- dr_mode: shall be one of "host", "peripheral" and "otg"
+  Refer to usb/generic.txt
 
 Example: