Adds a PWM driver for PWM chip present in SiFive's HiFive Unleashed SoC
This driver is simple port of Linux pwm sifive driver from Linux v5.6
commit: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM")
Signed-off-by: Yash Shah <yash.shah@sifive.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
This commit adds basic support for PWM found on Allwinner A64.
It can be used for pwm_backlight driver (e.g. for Pinebook)
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Unfortunately a test for the PWM uclass was not included when it was
submitted. This was noticed when trying to add more functionality:
http://patchwork.ozlabs.org/patch/748172/
Add a simple test to get us started.
Signed-off-by: Simon Glass <sjg@chromium.org>
This driver supports the standard PWM API. There are 5 PWMs. Four are used
normally and the last is normally used as a timer.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Use the driver-model PWM driver in preference to the old code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Move this option to Kconfig and clean up the header files. Adjust the only
user (the LCD driver) to work with the new driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Add a uclass that supports Pulse Width Modulation (PWM) devices. It
provides methods to enable/disable and configure the device.
Signed-off-by: Simon Glass <sjg@chromium.org>
