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
7title: Fixed Voltage regulators
8
9maintainers:
10  - Liam Girdwood <lgirdwood@gmail.com>
11  - Mark Brown <broonie@kernel.org>
12
13description:
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
19allOf:
20  - $ref: "regulator.yaml#"
21
22properties:
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
52required:
53  - compatible
54  - regulator-name
55
56examples:
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...
71