diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h
index 738d411..5f4b543 100644
--- a/arch/arm/include/asm/arch-mx25/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx25/imx-regs.h
@@ -241,6 +241,7 @@
 #define IMX_RTIC_BASE		(0x53FEC000)
 #define IMX_IIM_BASE		(0x53FF0000)
 #define IMX_USB_BASE		(0x53FF4000)
+#define IMX_USB_PORT_OFFSET	0x200
 #define IMX_CSI_BASE		(0x53FF8000)
 #define IMX_DRYICE_BASE		(0x53FFC000)