linux/arch/mips/configs/generic/board-litex.config

CONFIG_LITEX_LITEETH=y
CONFIG_SERIAL_LITEUART=y
CONFIG_SERIAL_LITEUART_CONSOLE=y
CONFIG_MMC=y
CONFIG_MMC_LITEX=y
CONFIG_LITEX_SOC_CONTROLLER=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y