--- a/drivers/net/phy/mdio-boardinfo.c
+++ b/drivers/net/phy/mdio-boardinfo.c
@@ -49,6 +49,7 @@ mdiobus_register_board_info(struct mdio_
 
 	for (i = 0; i < n; i++, be++, info++) {
 		memcpy(&be->board_info, info, sizeof(*info));
+		be->board_info.phy_addr = be->board_info.mdio_addr;
 		mutex_lock(&__mdio_board_lock);
 		list_add_tail(&be->list, &__mdio_board_list);
 		mutex_unlock(&__mdio_board_lock);
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -872,6 +872,7 @@ extern struct bus_type mdio_bus_type;
 
 struct mdio_board_info {
 	const char	*bus_id;
+	int		mdio_addr;
 	int		phy_addr;
 
 	const void	*platform_data;