diff --git a/include/phy.h b/include/phy.h
index edc702a1f7..b5de14cbfc 100644
--- a/include/phy.h
+++ b/include/phy.h
@@ -260,10 +260,15 @@ static inline int phy_write_mmd(struct phy_device *phydev, int devad,
 #ifdef CONFIG_PHYLIB_10G
 extern struct phy_driver gen10g_driver;
 
-/* For now, XGMII is the only 10G interface */
+/*
+ * List all 10G interfaces here, the assumption being that PHYs on these
+ * interfaces are C45
+ */
 static inline int is_10g_interface(phy_interface_t interface)
 {
-	return interface == PHY_INTERFACE_MODE_XGMII;
+	return interface == PHY_INTERFACE_MODE_XGMII ||
+	       interface == PHY_INTERFACE_MODE_USXGMII ||
+	       interface == PHY_INTERFACE_MODE_XFI;
 }
 
 #endif