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1Pincontrol driver for RK805 Power management IC.2 3RK805 has 2 pins which can be configured as GPIO output only.4 5Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>6for details of the common pinctrl bindings used by client devices,7including the meaning of the phrase "pin configuration node".8 9Optional Pinmux properties:10--------------------------11Following properties are required if default setting of pins are required12at boot.13- pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.14- pinctrl[0...n]: Properties to contain the phandle for pinctrl states per15 <pinctrl-bindings.txt>.16 17The pin configurations are defined as child of the pinctrl states node. Each18sub-node have following properties:19 20Required properties:21------------------22- #gpio-cells: Should be two. The first cell is the pin number and the23 second is the GPIO flags.24 25- gpio-controller: Marks the device node as a GPIO controller.26 27- pins: List of pins. Valid values of pins properties are: gpio0, gpio1.28 29First 2 properties must be added in the RK805 PMIC node, documented in30Documentation/devicetree/bindings/mfd/rockchip,rk808.yaml31 32Optional properties:33-------------------34Following are optional properties defined as pinmux DT binding document35<pinctrl-bindings.txt>. Absence of properties will leave the configuration36on default.37 function,38 output-low,39 output-high.40 41Valid values for function properties are: gpio.42 43There are also not customised properties for any GPIO.44 45Example:46--------47rk805: rk805@18 {48 compatible = "rockchip,rk805";49 ...50 gpio-controller;51 #gpio-cells = <2>;52 53 pinctrl-names = "default";54 pinctrl-0 = <&pmic_int_l>, <&rk805_default>;55 56 rk805_default: pinmux {57 gpio01 {58 pins = "gpio0", "gpio1";59 function = "gpio";60 output-high;61 };62 };63};64