diff --git a/arch/arm/configs/genmai_defconfig b/arch/arm/configs/genmai_defconfig
index aa0b704f48af..c56a7ff1dcd7 100644
--- a/arch/arm/configs/genmai_defconfig
+++ b/arch/arm/configs/genmai_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_NETDEVICES=y
 # CONFIG_NET_CORE is not set
 # CONFIG_NET_VENDOR_ARC is not set