Documentation/devicetree/bindings/regulator/gpio-regulator.txt

   1 GPIO controlled regulators
   2
   3 Required properties:
   4 - compatible            : Must be "regulator-gpio".
   5 - states                : Selection of available voltages and GPIO configs.
   6                           if there are no states, then use a fixed regulator
   7
   8 Optional properties:
   9 - enable-gpio           : GPIO to use to enable/disable the regulator.
  10 - gpios                 : GPIO group used to control voltage.
  11 - startup-delay-us      : Startup time in microseconds.
  12 - enable-active-high    : Polarity of GPIO is active high (default is low).
  13
  14 Any property defined as part of the core regulator binding defined in
  15 regulator.txt can also be used.
  16
  17 Example:
  18
  19         mmciv: gpio-regulator {
  20                 compatible = "regulator-gpio";
  21
  22                 regulator-name = "mmci-gpio-supply";
  23                 regulator-min-microvolt = <1800000>;
  24                 regulator-max-microvolt = <2600000>;
  25                 regulator-boot-on;
  26
  27                 enable-gpio = <&gpio0 23 0x4>;
  28                 gpios = <&gpio0 24 0x4
  29                          &gpio0 25 0x4>;
  30                 states = <1800000 0x3
  31                           2200000 0x2
  32                           2600000 0x1
  33                           2900000 0x0>;
  34
  35                 startup-delay-us = <100000>;
  36                 enable-active-high;
  37         };