diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
index da275556a..abc84d67a 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
@@ -698,6 +698,7 @@ static int xhci_dcbaa_alloc ( struct xhci_host *xhci ) {
 	}
 
 	xhci->dcbaa_addr = dcbaap_addr;
+	xhci->dcbaa.context = (void *)dcbaap_phy;
 
 #if 0
 	if ( ! xhci->dcbaa.context ) {
@@ -707,7 +708,7 @@ static int xhci_dcbaa_alloc ( struct xhci_host *xhci ) {
 	}
 #endif
 
-	memset ( xhci->dcbaa.context, 0, len );
+	memset ( (void *)xhci->dcbaa_addr, 0, len );
 
 	/* Program DCBAA pointer */
 //	dcbaap =  (uintptr_t)( xhci->dcbaa.context );
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
index 1d8403a4e..9c5a4b156 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.h
@@ -75,6 +75,12 @@ struct xhci_scratchpad {
 	uintptr_t buffer;
 	/** Scratchpad array */
 	uint64_t *array;
+	/* 
+	 * vir_addr: Vitual address array. It holds all the virtual address of the pages allocated to xHCI scratchpad buffer.
+	 * array_phy: Physical address of array. 
+	 */
+	uint64_t *vir_addr;
+	uintptr_t array_phy;
 };
 
 /** An input control context */