diff --git a/target/linux/ar71xx/config-3.3 b/target/linux/ar71xx/config-3.3
index 8788789d72..028ff9aa2b 100644
--- a/target/linux/ar71xx/config-3.3
+++ b/target/linux/ar71xx/config-3.3
@@ -154,6 +154,7 @@ CONFIG_IRQ_FORCED_THREADING=y
 # CONFIG_LEDS_WNDR3700_USB is not set
 # CONFIG_M25PXX_USE_FAST_READ is not set
 CONFIG_MARVELL_PHY=y
+CONFIG_MDIO_BOARDINFO=y
 CONFIG_MICREL_PHY=y
 # CONFIG_MINIX_FS_NATIVE_ENDIAN is not set
 CONFIG_MIPS=y