diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index b3bec3aaa45d..bc07ad30c9bf 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -74,6 +74,7 @@ config OF_NET
 config OF_MDIO
 	def_tristate PHYLIB
 	depends on PHYLIB
+	select FIXED_PHY
 	help
 	  OpenFirmware MDIO bus (Ethernet PHY) accessors
 
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index de68707a99c7..e2b50bc12f23 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -361,7 +361,6 @@ struct phy_device *of_phy_attach(struct net_device *dev,
 }
 EXPORT_SYMBOL(of_phy_attach);
 
-#if IS_ENABLED(CONFIG_FIXED_PHY)
 /*
  * of_phy_is_fixed_link() and of_phy_register_fixed_link() must
  * support two DT bindings:
@@ -451,4 +450,3 @@ int of_phy_register_fixed_link(struct device_node *np)
 	return -ENODEV;
 }
 EXPORT_SYMBOL(of_phy_register_fixed_link);
-#endif
diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h
index 6c8cb9aa4c00..4b04587d0441 100644
--- a/include/linux/of_mdio.h
+++ b/include/linux/of_mdio.h
@@ -25,6 +25,8 @@ struct phy_device *of_phy_attach(struct net_device *dev,
 
 extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
 extern int of_mdio_parse_addr(struct device *dev, const struct device_node *np);
+extern int of_phy_register_fixed_link(struct device_node *np);
+extern bool of_phy_is_fixed_link(struct device_node *np);
 
 #else /* CONFIG_OF */
 static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
@@ -67,12 +69,6 @@ static inline int of_mdio_parse_addr(struct device *dev,
 {
 	return -ENOSYS;
 }
-#endif /* CONFIG_OF */
-
-#if defined(CONFIG_OF) && IS_ENABLED(CONFIG_FIXED_PHY)
-extern int of_phy_register_fixed_link(struct device_node *np);
-extern bool of_phy_is_fixed_link(struct device_node *np);
-#else
 static inline int of_phy_register_fixed_link(struct device_node *np)
 {
 	return -ENOSYS;