1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pwm/pwm-rockchip.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Rockchip PWM controller
8
9maintainers:
10  - Heiko Stuebner <heiko@sntech.de>
11
12properties:
13  compatible:
14    oneOf:
15      - const: rockchip,rk2928-pwm
16      - const: rockchip,rk3288-pwm
17      - const: rockchip,rk3328-pwm
18      - const: rockchip,vop-pwm
19      - items:
20          - const: rockchip,rk3036-pwm
21          - const: rockchip,rk2928-pwm
22      - items:
23          - enum:
24              - rockchip,rk3368-pwm
25              - rockchip,rk3399-pwm
26              - rockchip,rv1108-pwm
27          - const: rockchip,rk3288-pwm
28      - items:
29          - enum:
30              - rockchip,px30-pwm
31              - rockchip,rk3308-pwm
32          - const: rockchip,rk3328-pwm
33
34  reg:
35    maxItems: 1
36
37  clocks:
38    minItems: 1
39    maxItems: 2
40
41  clock-names:
42    maxItems: 2
43
44  "#pwm-cells":
45    enum: [2, 3]
46    description:
47      Must be 2 (rk2928) or 3 (rk3288 and later).
48      See pwm.yaml for a description of the cell format.
49
50required:
51  - compatible
52  - reg
53  - "#pwm-cells"
54
55if:
56  properties:
57    compatible:
58      contains:
59        enum:
60          - rockchip,rk3328-pwm
61          - rockchip,rv1108-pwm
62
63then:
64  properties:
65    clocks:
66      items:
67        - description: Used to derive the functional clock for the device.
68        - description: Used as the APB bus clock.
69
70    clock-names:
71      items:
72        - const: pwm
73        - const: pclk
74
75  required:
76    - clocks
77    - clock-names
78
79else:
80  properties:
81    clocks:
82      maxItems: 1
83      description:
84        Used both to derive the functional clock
85        for the device and as the bus clock.
86
87  required:
88    - clocks
89
90additionalProperties: false
91
92examples:
93  - |
94    #include <dt-bindings/clock/rk3188-cru-common.h>
95    pwm0: pwm@20030000 {
96      compatible = "rockchip,rk2928-pwm";
97      reg = <0x20030000 0x10>;
98      clocks = <&cru PCLK_PWM01>;
99      #pwm-cells = <2>;
100    };
101