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pwm: Add MediaTek PWM support

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This patch adds support for the PWM core found on current ARM base SoCs
made by MediaTek. This IP core supports 5 channels and has 2 operational
modes. There is the old mode, which is a classical PWM and the new mode
which allows the user to define bitmasks that get clocked out on the
pins. As the subsystem currently only supports PWM cores with the "old"
mode, we can safely ignore the "new" mode for now.

Signed-off-by: John Crispin <john@phrozen.org>
[thierry.reding@gmail.com: minor cleanups]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
John Crispin
2017-01-23 19:34:37 +01:00
committed by Thierry Reding
parent 2ab15f580a
commit caf065f8fd
3 changed files with 230 additions and 0 deletions
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9
drivers/pwm/Kconfig
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@@ -293,6 +293,15 @@ config PWM_MTK_DISP
To compile this driver as a module, choose M here: the module
will be called pwm-mtk-disp.
config PWM_MEDIATEK
tristate "MediaTek PWM support"
depends on ARCH_MEDIATEK || COMPILE_TEST
help
Generic PWM framework driver for Mediatek ARM SoC.
To compile this driver as a module, choose M here: the module
will be called pwm-mxs.
config PWM_MXS
tristate "Freescale MXS PWM support"
depends on ARCH_MXS && OF