diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.h
index 1af816dfe..fb1c1bed0 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/usb_hc_xhci.h
@@ -45,6 +45,13 @@ Modification: rewrite xhci functions to dock with USB core layer, so that the xh
 extern "C" {
 #endif
 
+/* 
+ * Address of USB3 host control base Register in RK3568. 
+ */
+#define USB3_0_BASE_ADDR    0xFCC00000
+#define USB3_1_BASE_ADDR    0xFD000000
+
+
 /**
  * @brief xHCI host controller hardware init.
  *