Kernel-4.18.0-80.el8_pinctrl-rk805

Pincontrol driver for RK805 Power management IC.

RK805 has 2 pins which can be configured as GPIO output only.

Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
for details of the common pinctrl bindings used by client devices,
including the meaning of the phrase “pin configuration node”.

Optional Pinmux properties:

Following properties are required if default setting of pins are required
at boot.

• pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.
• pinctrl[0…n]: Properties to contain the phandle for pinctrl states per

    <pinctrl-bindings.txt>.
  

The pin configurations are defined as child of the pinctrl states node. Each
sub-node have following properties:

Required properties:

• #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.

• pins: List of pins. Valid values of pins properties are: gpio0, gpio1.

First 2 properties must be added in the RK805 PMIC node, documented in
Documentation/devicetree/bindings/mfd/rk808.txt

Optional properties:

Following are optional properties defined as pinmux DT binding document
<pinctrl-bindings.txt>. Absence of properties will leave the configuration
on default.
function,
output-low,
output-high.

Valid values for function properties are: gpio.

Theres is also not customised properties for any GPIO.

Example:

rk805: rk805@18 {
compatible = “rockchip,rk805”;
…
gpio-controller;
#gpio-cells = <2>;

pinctrl-names = "default";
pinctrl-0 = <&pmic_int_l>, <&rk805_default>;

rk805_default: pinmux {
    gpio01 {
        pins = "gpio0", "gpio1";
        function = "gpio";
        output-high;
    };
};

};