config DM_PWM
  	bool "Enable support for pulse-width modulation devices (PWM)"
  	depends on DM
  	help
  	  A pulse-width modulator emits a pulse of varying width and provides
  	  control over the duty cycle (high and low time) of the signal. This
  	  is often used to control a voltage level. The more time the PWM
  	  spends in the 'high' state, the higher the voltage. The PWM's
  	  frequency/period can be controlled along with the proportion of that
  	  time that the signal is high.

  config PWM_EXYNOS
  	bool "Enable support for the Exynos PWM"
  	depends on DM_PWM
  	help
  	  This PWM is found on Samsung Exynos 5250 and other Samsung SoCs. It
  	  supports a programmable period and duty cycle. A 32-bit counter is
  	  used. It provides 5 channels which can be independently
  	  programmed. Channel 4 (the last) is normally used as a timer.

  config PWM_ROCKCHIP
  	bool "Enable support for the Rockchip PWM"
  	depends on DM_PWM
  	help
  	  This PWM is found on RK3288 and other Rockchip SoCs. It supports a
  	  programmable period and duty cycle. A 32-bit counter is used.
  	  Various options provided in the hardware (such as capture mode and
  	  continuous/single-shot) are not supported by the driver.

  config PWM_SANDBOX
  	bool "Enable support for the sandbox PWM"
  	help
  	  This is a sandbox PWM used for testing. It provides 3 channels and
  	  records the settings passed into it, but otherwise does nothing
  	  useful. The PWM can be enabled but is not connected to any outputs
  	  so this is not very useful.

  config PWM_TEGRA
  	bool "Enable support for the Tegra PWM"

  	depends on DM_PWM

  	help
  	  This PWM is found on Tegra 20 and other Nvidia SoCs. It supports
  	  four channels with a programmable period and duty cycle. Only a
  	  32KHz clock is supported by the driver but the duty cycle is
  	  configurable.

  
  config PWM_SUNXI
  	bool "Enable support for the Allwinner Sunxi PWM"
  	depends on DM_PWM
  	help
  	  This PWM is found on H3, A64 and other Allwinner SoCs. It supports a
  	  programmable period and duty cycle. A 16-bit counter is used.