diff options
| author |   Andrew Lunn <andrew@lunn.ch> | 2017-04-14 17:40:52 +0200 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2017-04-24 11:16:25 +0200 |
| commit | 757642f9a584e893f3f4e50c99b674ee8a3ed363 (patch) | |
| tree | 0e2368916e74b773b1bace1e3aa2b83fb1a04f19 /MAINTAINERS | |
| parent | gpio: Use unsigned int for interrupt numbers (diff) | |
| download | wireguard-linux-757642f9a584e893f3f4e50c99b674ee8a3ed363.tar.xz wireguard-linux-757642f9a584e893f3f4e50c99b674ee8a3ed363.zip | |
gpio: mvebu: Add limited PWM support
Armada 370/XP devices can 'blink' GPIO lines with a configurable on
and off period. This can be modelled as a PWM.
However, there are only two sets of PWM configuration registers for
all the GPIO lines. This driver simply allows a single GPIO line per
GPIO chip of 32 lines to be used as a PWM. Attempts to use more return
EBUSY.
Due to the interleaving of registers it is not simple to separate the
PWM driver from the GPIO driver. Thus the GPIO driver has been
extended with a PWM driver.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
URL: https://patchwork.ozlabs.org/patch/427287/
URL: https://patchwork.ozlabs.org/patch/427295/
[Ralph Sennhauser:
* Port forward
* Merge PWM portion into gpio-mvebu.c
* Switch to atomic PWM API
* Add new compatible string marvell,armada-370-xp-gpio
* Update and merge documentation patch
* Update MAINTAINERS]
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'MAINTAINERS')
| -rw-r--r-- | MAINTAINERS | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index c265a5fe4848..d09295681f68 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10212,6 +10212,8 @@ F: include/linux/pwm.h F: drivers/pwm/ F: drivers/video/backlight/pwm_bl.c F: include/linux/pwm_backlight.h +F: drivers/gpio/gpio-mvebu.c +F: Documentation/devicetree/bindings/gpio/gpio-mvebu.txt PXA2xx/PXA3xx SUPPORT M: Daniel Mack <daniel@zonque.org> |