menuconfig PWM bool "PWM Support" help This enables PWM support through the generic PWM framework. You only need to enable this, if you also want to enable one or more of the PWM drivers below. If unsure, say N. if PWM config PWM_TEGRA tristate "NVIDIA Tegra PWM support" depends on ARCH_TEGRA help Generic PWM framework driver for the PWFM controller found on NVIDIA Tegra SoCs. To compile this driver as a module, choose M here: the module will be called pwm-tegra. endif