mirror of
https://github.com/torvalds/linux
synced 2024-09-21 11:38:48 +00:00
f72f4b44df
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: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
31 lines
769 B
Plaintext
31 lines
769 B
Plaintext
AXP209 GPIO controller
|
|
|
|
This driver follows the usual GPIO bindings found in
|
|
Documentation/devicetree/bindings/gpio/gpio.txt
|
|
|
|
Required properties:
|
|
- compatible: Should be "x-powers,axp209-gpio"
|
|
- #gpio-cells: Should be two. The first cell is the pin number and the
|
|
second is the GPIO flags.
|
|
- gpio-controller: Marks the device node as a GPIO controller.
|
|
|
|
This node must be a subnode of the axp20x PMIC, documented in
|
|
Documentation/devicetree/bindings/mfd/axp20x.txt
|
|
|
|
Example:
|
|
|
|
axp209: pmic@34 {
|
|
compatible = "x-powers,axp209";
|
|
reg = <0x34>;
|
|
interrupt-parent = <&nmi_intc>;
|
|
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
|
|
interrupt-controller;
|
|
#interrupt-cells = <1>;
|
|
|
|
axp_gpio: gpio {
|
|
compatible = "x-powers,axp209-gpio";
|
|
gpio-controller;
|
|
#gpio-cells = <2>;
|
|
};
|
|
};
|