diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
index 289967973ff5..482f815363ef 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: