kernel/Documentation/devicetree/bindings/regulator/fixed-regulator.txt

   1 Fixed Voltage regulators
   2
   3 Required properties:
   4 - compatible: Must be "regulator-fixed";
   5
   6 Optional properties:
   7 - gpio: gpio to use for enable control
   8 - startup-delay-us: startup time in microseconds
   9 - enable-active-high: Polarity of GPIO is Active high
  10 If this property is missing, the default assumed is Active low.
  11 - gpio-open-drain: GPIO is open drain type.
  12   If this property is missing then default assumption is false.
  13 -vin-supply: Input supply name.
  14
  15 Any property defined as part of the core regulator
  16 binding, defined in regulator.txt, can also be used.
  17 However a fixed voltage regulator is expected to have the
  18 regulator-min-microvolt and regulator-max-microvolt
  19 to be the same.
  20
  21 Example:
  22
  23         abc: fixedregulator@0 {
  24                 compatible = "regulator-fixed";
  25                 regulator-name = "fixed-supply";
  26                 regulator-min-microvolt = <1800000>;
  27                 regulator-max-microvolt = <1800000>;
  28                 gpio = <&gpio1 16 0>;
  29                 startup-delay-us = <70000>;
  30                 enable-active-high;
  31                 regulator-boot-on;
  32                 gpio-open-drain;
  33                 vin-supply = <&parent_reg>;
  34         };