diff --git a/arch/powerpc/configs/corenet32_smp_defconfig b/arch/powerpc/configs/corenet32_smp_defconfig
index ca7957b09a3cc13ad6882006468a7e3431e7a75f..44e53a4e2106984bdf05e39a5dc0a61b2122c956 100644
--- a/arch/powerpc/configs/corenet32_smp_defconfig
+++ b/arch/powerpc/configs/corenet32_smp_defconfig
@@ -99,6 +99,7 @@ CONFIG_E1000E=y
 CONFIG_AT803X_PHY=y
 CONFIG_VITESSE_PHY=y
 CONFIG_FIXED_PHY=y
+CONFIG_MDIO_BUS_MUX_GPIO=y
 # CONFIG_INPUT_MOUSEDEV is not set
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
diff --git a/arch/powerpc/configs/corenet64_smp_defconfig b/arch/powerpc/configs/corenet64_smp_defconfig
index 066eb45afb0bb84129787aa4495c69349f86e82d..3bf794be5b81e3a27342452ed6f985ec31a8039d 100644
--- a/arch/powerpc/configs/corenet64_smp_defconfig
+++ b/arch/powerpc/configs/corenet64_smp_defconfig
@@ -93,6 +93,7 @@ CONFIG_FSL_XGMAC_MDIO=y
 CONFIG_E1000E=y
 CONFIG_VITESSE_PHY=y
 CONFIG_FIXED_PHY=y
+CONFIG_MDIO_BUS_MUX_GPIO=y
 CONFIG_INPUT_FF_MEMLESS=m
 # CONFIG_INPUT_MOUSEDEV is not set
 # CONFIG_INPUT_KEYBOARD is not set
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c
index 902358d4c832f9bdd261eeb0d2f6c48c8b66e756..38205890891068d4e4589870a04addaadd69b35f 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -87,6 +87,9 @@ static const struct of_device_id of_device_ids[] = {
 	{
 		.compatible	= "simple-bus"
 	},
+	{
+		.compatible	= "mdio-mux-gpio"
+	},
 	{
 		.compatible	= "fsl,srio",
 	},