Index: sys/arm/conf/ARMADAXP
===================================================================
--- sys/arm/conf/ARMADAXP
+++ sys/arm/conf/ARMADAXP
@@ -95,6 +95,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 options 	DEVICE_POLLING
Index: sys/arm/conf/DB-78XXX
===================================================================
--- sys/arm/conf/DB-78XXX
+++ sys/arm/conf/DB-78XXX
@@ -66,6 +66,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 
Index: sys/arm/conf/DB-88F5XXX
===================================================================
--- sys/arm/conf/DB-88F5XXX
+++ sys/arm/conf/DB-88F5XXX
@@ -65,6 +65,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 options 	DEVICE_POLLING
Index: sys/arm/conf/DB-88F6XXX
===================================================================
--- sys/arm/conf/DB-88F6XXX
+++ sys/arm/conf/DB-88F6XXX
@@ -67,6 +67,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 
Index: sys/arm/conf/DOCKSTAR
===================================================================
--- sys/arm/conf/DOCKSTAR
+++ sys/arm/conf/DOCKSTAR
@@ -96,6 +96,7 @@
 # Networking
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 
 # USB
Index: sys/arm/conf/DREAMPLUG-1001
===================================================================
--- sys/arm/conf/DREAMPLUG-1001
+++ sys/arm/conf/DREAMPLUG-1001
@@ -100,6 +100,7 @@
 # Networking
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 
 # USB
Index: sys/arm/conf/SHEEVAPLUG
===================================================================
--- sys/arm/conf/SHEEVAPLUG
+++ sys/arm/conf/SHEEVAPLUG
@@ -60,6 +60,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 options 	DEVICE_POLLING
Index: sys/arm/conf/TS7800
===================================================================
--- sys/arm/conf/TS7800
+++ sys/arm/conf/TS7800
@@ -60,6 +60,7 @@
 device		ether
 device		mge			# Marvell Gigabit Ethernet controller
 device		mii
+device		mdio
 device		e1000phy
 device		bpf
 options 	HZ=1000
Index: sys/conf/files
===================================================================
--- sys/conf/files
+++ sys/conf/files
@@ -1397,8 +1397,8 @@
 dev/etherswitch/ip17x/ip175d.c		optional ip17x
 dev/etherswitch/ip17x/ip17x_phy.c	optional ip17x
 dev/etherswitch/ip17x/ip17x_vlans.c	optional ip17x
-dev/etherswitch/mdio_if.m		optional miiproxy
-dev/etherswitch/mdio.c			optional miiproxy
+dev/etherswitch/mdio_if.m		optional miiproxy | mdio
+dev/etherswitch/mdio.c			optional miiproxy | mdio
 dev/etherswitch/miiproxy.c		optional miiproxy
 dev/etherswitch/rtl8366/rtl8366rb.c	optional rtl8366rb
 dev/etherswitch/ukswitch/ukswitch.c	optional ukswitch