diff --git a/port/dwc2/usb_glue_st.c b/port/dwc2/usb_glue_st.c
index f73dc5e..4dff31f 100644
--- a/port/dwc2/usb_glue_st.c
+++ b/port/dwc2/usb_glue_st.c
@@ -166,6 +166,8 @@ uint32_t usbd_get_dwc2_gccfg_conf(uint32_t reg_base)
     USB_OTG_GLB->GCCFG = (1 << 23);
     usb_hsphy_init(25000000U);
     return (1 << 23);    /* Enable USB HS PHY USBx->GCCFG |= USB_OTG_GCCFG_PHYHSEN;*/
+#elif __has_include("stm32h7rsxx.h")
+    return (1 << 21);
 #else
     return 0;
 #endif
@@ -192,6 +194,8 @@ uint32_t usbh_get_dwc2_gccfg_conf(uint32_t reg_base)
     USB_OTG_GLB->GCCFG = (1 << 23);
     usb_hsphy_init(25000000U);
     return (1 << 23); /* Enable USB HS PHY USBx->GCCFG |= USB_OTG_GCCFG_PHYHSEN;*/
+#elif __has_include("stm32h7rsxx.h")
+    return (1 << 21);
 #else
     return 0;
 #endif