diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 09243a680a0d..1ecdc062df58 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -255,6 +255,8 @@
 #define DWC3_GUSB3PIPECTL_TX_DEEPH(n)	((n) << 1)
 
 /* Global TX Fifo Size Register */
+#define DWC31_GTXFIFOSIZ_TXFRAMNUM	BIT(15)		/* DWC_usb31 only */
+#define DWC31_GTXFIFOSIZ_TXFDEF(n)	((n) & 0x7fff)	/* DWC_usb31 only */
 #define DWC3_GTXFIFOSIZ_TXFDEF(n)	((n) & 0xffff)
 #define DWC3_GTXFIFOSIZ_TXFSTADDR(n)	((n) & 0xffff0000)