diff --git a/include/linux/phy.h b/include/linux/phy.h
index 54ef45823fc17801f166c5092d9010e241948ed2..5a808a26e4cf27d7cc20d3f1a8935244c601867d 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -715,6 +715,17 @@ static inline bool phy_is_internal(struct phy_device *phydev)
 	return phydev->is_internal;
 }
 
+/**
+ * phy_interface_mode_is_rgmii - Convenience function for testing if a
+ * PHY interface mode is RGMII (all variants)
+ * @mode: the phy_interface_t enum
+ */
+static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
+{
+	return mode >= PHY_INTERFACE_MODE_RGMII &&
+		mode <= PHY_INTERFACE_MODE_RGMII_TXID;
+};
+
 /**
  * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
  * is RGMII (all variants)
@@ -722,8 +733,7 @@ static inline bool phy_is_internal(struct phy_device *phydev)
  */
 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
 {
-	return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
-		phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
+	return phy_interface_mode_is_rgmii(phydev->interface);
 };
 
 /*