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 975bb2fec..93b36c792 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
@@ -874,7 +874,8 @@ struct xhci_host {
 	/* 
 	 * Device context base address array.
 	 *
-	 * dcbaa_addr holds the virtual address of the dcbaa, meanwhile dcbaa_phy keeps the value that should be writen to XHCI_OP_DCBAAP. 
+	 * dcbaa_addr holds the virtual address of the dcbaa, meanwhile dcbaa_phy keeps the value that should be writen to Device Context 
+	 * Base Address Array Pointer Register (XHCI_OP_DCBAAP). 
 	 */
     uintptr_t                 dcbaa_addr;
 	uintptr_t                 dcbaa_phy;
@@ -891,6 +892,12 @@ struct xhci_host {
 
 	/** Command ring */
 	struct xhci_ring       *cmds;
+	/* 
+	 * cmds_addr holds the virtual address of the command ring, meanwhile cmds_phy keeps the value that should be writen to Command Ring 
+	 * Control Register (XHCI_OP_CRCR). 
+	 */
+	uintptr_t       cmds_addr;
+	uintptr_t       cmds_phy;
 	/** Event ring */
 	struct xhci_ring       *evts;
     struct xhci_er_seg     *eseg;