diff --git a/configs/imx6ul_isiot_mmc_defconfig b/configs/imx6ul_isiot_mmc_defconfig
index 5214479..06ef950 100644
--- a/configs/imx6ul_isiot_mmc_defconfig
+++ b/configs/imx6ul_isiot_mmc_defconfig
@@ -39,3 +39,5 @@
 CONFIG_PINCTRL_IMX6=y
 CONFIG_MXC_UART=y
 CONFIG_IMX_THERMAL=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_SMSC=y