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.txt, 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 properties:
  20   compatible:
  21     const: regulator-fixed
  22
  23   regulator-name: true
  24
  25   gpio:
  26     description: gpio to use for enable control
  27     maxItems: 1
  28
  29   startup-delay-us:
  30     description: startup time in microseconds
  31     $ref: /schemas/types.yaml#/definitions/uint32
  32
  33   enable-active-high:
  34     description:
  35       Polarity of GPIO is Active high. If this property is missing,
  36       the default assumed is Active low.
  37     type: boolean
  38
  39   gpio-open-drain:
  40     description:
  41       GPIO is open drain type. If this property is missing then default
  42       assumption is false.
  43     type: boolean
  44
  45   vin-supply:
  46     description: Input supply phandle.
  47     $ref: /schemas/types.yaml#/definitions/phandle
  48
  49 required:
  50   - compatible
  51   - regulator-name
  52
  53 examples:
  54   - |
  55     reg_1v8: regulator-1v8 {
  56       compatible = "regulator-fixed";
  57       regulator-name = "1v8";
  58       regulator-min-microvolt = <1800000>;
  59       regulator-max-microvolt = <1800000>;
  60       gpio = <&gpio1 16 0>;
  61       startup-delay-us = <70000>;
  62       enable-active-high;
  63       regulator-boot-on;
  64       gpio-open-drain;
  65       vin-supply = <&parent_reg>;
  66     };
  67 ...