diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/common/usb_hc.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/common/usb_hc.h
index a7f09f8a3..6791945a7 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/common/usb_hc.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/common/usb_hc.h
@@ -108,6 +108,15 @@ int usbh_roothub_control(struct usbh_bus *usb, struct usb_setup_packet *setup, u
  */
 int usbh_get_devaddr(struct usbh_hubport *hport);
 
+/**
+ * @brief get port speed.
+ *
+ * @param hport Hub of USB device
+ * @param port Port index
+ * @return On success will return speed, and others indicate fail.
+ */
+uint8_t usbh_get_port_speed(struct usbh_hub *hub, const uint8_t port);
+
 /**
  * @brief reconfig endpoint pipe.
  *