diff --git a/configs/smdk5420_defconfig b/configs/smdk5420_defconfig
index 8900525..e3d829b 100644
--- a/configs/smdk5420_defconfig
+++ b/configs/smdk5420_defconfig
@@ -4,3 +4,6 @@
 CONFIG_DEFAULT_DEVICE_TREE="exynos5420-smdk5420"
 CONFIG_SPL=y
 CONFIG_CMD_NET=y
+CONFIG_SPI_FLASH=y
+CONFIG_USB=y
+CONFIG_DM_USB=y