diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
new file mode 100644
index 0000000..158ca9c
--- /dev/null
+++ b/include/linux/usb/phy.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * USB PHY defines
+ *
+ * These APIs may be used between USB controllers.  USB device drivers
+ * (for either host or peripheral roles) don't use these calls; they
+ * continue to use just usb_device and usb_gadget.
+ */
+
+#ifndef __LINUX_USB_PHY_H
+#define __LINUX_USB_PHY_H
+
+enum usb_phy_interface {
+	USBPHY_INTERFACE_MODE_UNKNOWN,
+	USBPHY_INTERFACE_MODE_UTMI,
+	USBPHY_INTERFACE_MODE_UTMIW,
+};
+
+#endif /* __LINUX_USB_PHY_H */