Index: uspace/drv/bus/usb/xhci/hw_struct/regs.h
===================================================================
--- uspace/drv/bus/usb/xhci/hw_struct/regs.h	(revision 548c1238cba73184d31834477064377b71bc546c)
+++ uspace/drv/bus/usb/xhci/hw_struct/regs.h	(revision c9d905f24da71d7b3de3a02c52a7f4689e544c22)
@@ -581,4 +581,7 @@
 #define XHCI_LEGSUP_SEM_OS	sem_os, 8, FLAG, 0
 
+#define XHCI_LEGSUP_POLLING_DELAY_1MS	1000
+#define XHCI_LEGSUP_BIOS_TIMEOUT_US	1000000 /* 4.22.1 BIOS may take up to 1 second to release the device */
+
 #endif
 /**