xref: /linux/Documentation/devicetree/bindings/pwm/clk-pwm.yaml (revision fd7d598270724cc787982ea48bbe17ad383a8b7f) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pwm/clk-pwm.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Clock based PWM controller
8
9maintainers:
10  - Nikita Travkin <nikita@trvn.ru>
11
12description: |
13  Some systems have clocks that can be exposed to external devices.
14  (e.g. by muxing them to GPIO pins)
15  It's often possible to control duty-cycle of such clocks which makes them
16  suitable for generating PWM signal.
17
18allOf:
19  - $ref: pwm.yaml#
20
21properties:
22  compatible:
23    const: clk-pwm
24
25  clocks:
26    description: Clock used to generate the signal.
27    maxItems: 1
28
29  "#pwm-cells":
30    const: 2
31
32unevaluatedProperties: false
33
34required:
35  - compatible
36  - clocks
37
38examples:
39  - |
40    pwm {
41      compatible = "clk-pwm";
42      #pwm-cells = <2>;
43      clocks = <&gcc 0>;
44      pinctrl-names = "default";
45      pinctrl-0 = <&pwm_clk_flash_default>;
46    };
47