xref: /linux/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pwm/pwm-gpio.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Generic software PWM for modulating GPIOs
8
9maintainers:
10  - Stefan Wahren <wahrenst@gmx.net>
11
12allOf:
13  - $ref: pwm.yaml#
14
15properties:
16  compatible:
17    const: pwm-gpio
18
19  "#pwm-cells":
20    const: 3
21    description:
22      See pwm.yaml in this directory for a description of the cells format.
23      The first cell which represents the PWM instance number must always
24      be zero.
25
26  gpios:
27    description:
28      GPIO to be modulated
29    maxItems: 1
30
31required:
32  - compatible
33  - "#pwm-cells"
34  - gpios
35
36additionalProperties: false
37
38examples:
39  - |
40    #include <dt-bindings/gpio/gpio.h>
41
42    pwm {
43        #pwm-cells = <3>;
44        compatible = "pwm-gpio";
45        gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
46    };
47