rockchip: rk3288: sdram: style fixes from rk3188 sdram review

[oweals/u-boot.git] / drivers / pwm / Kconfig

diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index bd47159860253ad68a47d0562d03e6668e41ce8d..37ea2b88eae1f8b46cac62fb3074320be719aa99 100644 (file)
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -8,3 +8,30 @@ config DM_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_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.