diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index aec689941c18c5cf64a39eba7ca90c2244ef5cb7..f7adc6e01f9ea4544363d6f1bfa446854c813dec 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -688,6 +688,7 @@ struct usb_otg20_descriptor {
 /* from usb_otg_descriptor.bmAttributes */
 #define USB_OTG_SRP		(1 << 0)
 #define USB_OTG_HNP		(1 << 1)	/* swap host/device roles */
+#define USB_OTG_ADP		(1 << 2)	/* support ADP */
 
 /*-------------------------------------------------------------------------*/