diff --git a/arch/arm/configs/kzm9d_defconfig b/arch/arm/configs/kzm9d_defconfig
index e42ce3756af3e9cac163fca222fcbcb3c30fb440..1cc330b06bf6cefca49af34274ffe4e38a215bb9 100644
--- a/arch/arm/configs/kzm9d_defconfig
+++ b/arch/arm/configs/kzm9d_defconfig
@@ -50,6 +50,8 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
 # CONFIG_BLK_DEV is not set
 CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_BROADCOM is not set