Documentation/devicetree/bindings/pinctrl/pinctrl-rk805.txt

   1 Pincontrol driver for RK805 Power management IC.
   2
   3 RK805 has 2 pins which can be configured as GPIO output only.
   4
   5 Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
   6 for details of the common pinctrl bindings used by client devices,
   7 including the meaning of the phrase "pin configuration node".
   8
   9 Optional Pinmux properties:
  10 --------------------------
  11 Following properties are required if default setting of pins are required
  12 at boot.
  13 - pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.
  14 - pinctrl[0...n]: Properties to contain the phandle for pinctrl states per
  15                 <pinctrl-bindings.txt>.
  16
  17 The pin configurations are defined as child of the pinctrl states node. Each
  18 sub-node have following properties:
  19
  20 Required properties:
  21 ------------------
  22 - #gpio-cells: Should be two. The first cell is the pin number and the
  23   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
  29 First 2 properties must be added in the RK805 PMIC node, documented in
  30 Documentation/devicetree/bindings/mfd/rk808.txt
  31
  32 Optional properties:
  33 -------------------
  34 Following are optional properties defined as pinmux DT binding document
  35 <pinctrl-bindings.txt>. Absence of properties will leave the configuration
  36 on default.
  37         function,
  38         output-low,
  39         output-high.
  40
  41 Valid values for function properties are: gpio.
  42
  43 Theres is also not customised properties for any GPIO.
  44
  45 Example:
  46 --------
  47 rk805: 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 };