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
7 title: Rockchip PWM controller
8
9 maintainers:
10 - Heiko Stuebner <heiko@sntech.de>
11
12 properties:
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,rk3128-pwm
25 - rockchip,rk3368-pwm
26 - rockchip,rk3399-pwm
27 - rockchip,rv1108-pwm
28 - const: rockchip,rk3288-pwm
29 - items:
30 - enum:
31 - rockchip,px30-pwm
32 - rockchip,rk3308-pwm
33 - rockchip,rk3568-pwm
34 - rockchip,rk3588-pwm
35 - rockchip,rv1126-pwm
36 - const: rockchip,rk3328-pwm
37
38 reg:
39 maxItems: 1
40
41 clocks:
42 minItems: 1
43 maxItems: 2
44
45 clock-names:
46 maxItems: 2
47
48 "#pwm-cells":
49 enum: [2, 3]
50 description:
51 Must be 2 (rk2928) or 3 (rk3288 and later).
52 See pwm.yaml for a description of the cell format.
53
54 required:
55 - compatible
56 - reg
57
58 allOf:
59 - $ref: pwm.yaml#
60
61 - if:
62 properties:
63 compatible:
64 contains:
65 enum:
66 - rockchip,rk3328-pwm
67 - rockchip,rv1108-pwm
68
69 then:
70 properties:
71 clocks:
72 items:
73 - description: Used to derive the functional clock for the device.
74 - description: Used as the APB bus clock.
75
76 clock-names:
77 items:
78 - const: pwm
79 - const: pclk
80
81 required:
82 - clocks
83 - clock-names
84
85 else:
86 properties:
87 clocks:
88 maxItems: 1
89 description:
90 Used both to derive the functional clock
91 for the device and as the bus clock.
92
93 required:
94 - clocks
95
96 additionalProperties: false
97
98 examples:
99 - |
100 #include <dt-bindings/clock/rk3188-cru-common.h>
101 pwm0: pwm@20030000 {
102 compatible = "rockchip,rk2928-pwm";
103 reg = <0x20030000 0x10>;
104 clocks = <&cru PCLK_PWM01>;
105 #pwm-cells = <2>;
106 };
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