--- zzzz-none-000/linux-5.4.213/include/linux/of_mdio.h	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/include/linux/of_mdio.h	2024-08-14 09:02:08.000000000 +0000
@@ -26,6 +26,8 @@
 				 phy_interface_t iface);
 
 extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
+extern int of_mdiobus_register_phy(struct mii_bus *mdio,
+		struct device_node *child, u32 addr);
 extern int of_phy_register_fixed_link(struct device_node *np);
 extern void of_phy_deregister_fixed_link(struct device_node *np);
 extern bool of_phy_is_fixed_link(struct device_node *np);
@@ -101,6 +103,13 @@
 {
 	return -ENOSYS;
 }
+
+static int of_mdiobus_register_phy(struct mii_bus *mdio,
+		struct device_node *child, u32 addr)
+{
+	return -ENOSYS;
+}
+
 static inline int of_phy_register_fixed_link(struct device_node *np)
 {
 	return -ENOSYS;