gpio: Add AXP209 GPIO driver
The AXP209 PMIC has a bunch of GPIOs accessible, that are usually used to control LEDs or backlight. Add a driver for them Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com> Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
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drivers/gpio/gpio-axp209.c
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