menuconfig POWER_RESET bool "Board level reset or power off" help Provides a number of drivers which either reset a complete board or shut it down, by manipulating the main power supply on the board. Say Y here to enable board reset and power off config POWER_RESET_GPIO bool "GPIO power-off driver" depends on OF_GPIO && POWER_RESET help This driver supports turning off your board via a GPIO line. If your board needs a GPIO high/low to power down, say Y and create a binding in your devicetree.