diff --git a/configs/ot1200_spl_defconfig b/configs/ot1200_spl_defconfig
index 292ef19..495dc39 100644
--- a/configs/ot1200_spl_defconfig
+++ b/configs/ot1200_spl_defconfig
@@ -45,6 +45,7 @@
 CONFIG_SPI_FLASH_SST=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PHYLIB=y
+CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
 CONFIG_DM_THERMAL=y