CONFIG_ARM=y CONFIG_TARGET_LS1021ATWR=y CONFIG_DM_SERIAL=y CONFIG_DEFAULT_DEVICE_TREE="ls1021a-twr-lpuart" CONFIG_OF_BOARD_SETUP=y CONFIG_OF_STDOUT_VIA_ALIAS=y CONFIG_SYS_EXTRA_OPTIONS="LPUART" # CONFIG_CMD_SETEXPR is not set CONFIG_OF_CONTROL=y CONFIG_DM=y CONFIG_NETDEVICES=y CONFIG_E1000=y CONFIG_FSL_LPUART=y