diff --git a/configs/evb-rk3328_defconfig b/configs/evb-rk3328_defconfig
index 75a0e0f..53ad677 100644
--- a/configs/evb-rk3328_defconfig
+++ b/configs/evb-rk3328_defconfig
@@ -57,6 +57,7 @@
 CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
+# CONFIG_ROCKCHIP_IODOMAIN is not set
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_PHY_MOTORCOMM=y