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

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/regulator/fixed-regulator.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Fixed Voltage regulators
   8
   9 maintainers:
  10   - Liam Girdwood <lgirdwood@gmail.com>
  11   - Mark Brown <broonie@kernel.org>
  12
  13 description:
  14   Any property defined as part of the core regulator binding, defined in
  15   regulator.yaml, can also be used. However a fixed voltage regulator is
  16   expected to have the regulator-min-microvolt and regulator-max-microvolt
  17   to be the same.
  18
  19 allOf:
  20   - $ref: "regulator.yaml#"
  21
  22 properties:
  23   compatible:
  24     const: regulator-fixed
  25
  26   regulator-name: true
  27
  28   gpio:
  29     description: gpio to use for enable control
  30     maxItems: 1
  31
  32   startup-delay-us:
  33     description: startup time in microseconds
  34     $ref: /schemas/types.yaml#/definitions/uint32
  35
  36   enable-active-high:
  37     description:
  38       Polarity of GPIO is Active high. If this property is missing,
  39       the default assumed is Active low.
  40     type: boolean
  41
  42   gpio-open-drain:
  43     description:
  44       GPIO is open drain type. If this property is missing then default
  45       assumption is false.
  46     type: boolean
  47
  48   vin-supply:
  49     description: Input supply phandle.
  50     $ref: /schemas/types.yaml#/definitions/phandle
  51
  52 required:
  53   - compatible
  54   - regulator-name
  55
  56 examples:
  57   - |
  58     reg_1v8: regulator-1v8 {
  59       compatible = "regulator-fixed";
  60       regulator-name = "1v8";
  61       regulator-min-microvolt = <1800000>;
  62       regulator-max-microvolt = <1800000>;
  63       gpio = <&gpio1 16 0>;
  64       startup-delay-us = <70000>;
  65       enable-active-high;
  66       regulator-boot-on;
  67       gpio-open-drain;
  68       vin-supply = <&parent_reg>;
  69     };
  70 ...