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

   1 Fixed Voltage regulators
   2
   3 Required properties:
   4 - compatible: Must be "regulator-fixed";
   5 - regulator-name: Defined in regulator.txt as optional, but required here.
   6
   7 Optional properties:
   8 - gpio: gpio to use for enable control
   9 - startup-delay-us: startup time in microseconds
  10 - enable-active-high: Polarity of GPIO is Active high
  11 If this property is missing, the default assumed is Active low.
  12 - gpio-open-drain: GPIO is open drain type.
  13   If this property is missing then default assumption is false.
  14 -vin-supply: Input supply name.
  15
  16 Any property defined as part of the core regulator
  17 binding, defined in regulator.txt, can also be used.
  18 However a fixed voltage regulator is expected to have the
  19 regulator-min-microvolt and regulator-max-microvolt
  20 to be the same.
  21
  22 Example:
  23
  24         abc: fixedregulator@0 {
  25                 compatible = "regulator-fixed";
  26                 regulator-name = "fixed-supply";
  27                 regulator-min-microvolt = <1800000>;
  28                 regulator-max-microvolt = <1800000>;
  29                 gpio = <&gpio1 16 0>;
  30                 startup-delay-us = <70000>;
  31                 enable-active-high;
  32                 regulator-boot-on;
  33                 gpio-open-drain;
  34                 vin-supply = <&parent_reg>;
  35         };