xref: /linux/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml (revision e7d759f31ca295d589f7420719c311870bb3166f) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pwm/renesas,tpu-pwm.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas R-Car Timer Pulse Unit PWM Controller
8
9maintainers:
10  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
11
12select:
13  properties:
14    compatible:
15      contains:
16        const: renesas,tpu
17  required:
18    - compatible
19    - '#pwm-cells'
20
21properties:
22  compatible:
23    items:
24      - enum:
25          - renesas,tpu-r8a73a4   # R-Mobile APE6
26          - renesas,tpu-r8a7740   # R-Mobile A1
27          - renesas,tpu-r8a7742   # RZ/G1H
28          - renesas,tpu-r8a7743   # RZ/G1M
29          - renesas,tpu-r8a7744   # RZ/G1N
30          - renesas,tpu-r8a7745   # RZ/G1E
31          - renesas,tpu-r8a7790   # R-Car H2
32          - renesas,tpu-r8a7791   # R-Car M2-W
33          - renesas,tpu-r8a7792   # R-Car V2H
34          - renesas,tpu-r8a7793   # R-Car M2-N
35          - renesas,tpu-r8a7794   # R-Car E2
36          - renesas,tpu-r8a7795   # R-Car H3
37          - renesas,tpu-r8a7796   # R-Car M3-W
38          - renesas,tpu-r8a77961  # R-Car M3-W+
39          - renesas,tpu-r8a77965  # R-Car M3-N
40          - renesas,tpu-r8a77970  # R-Car V3M
41          - renesas,tpu-r8a77980  # R-Car V3H
42          - renesas,tpu-r8a779a0  # R-Car V3U
43          - renesas,tpu-r8a779g0  # R-Car V4H
44      - const: renesas,tpu
45
46  reg:
47    # Base address and length of each memory resource used by the PWM
48    # controller hardware module.
49    maxItems: 1
50
51  interrupts:
52    maxItems: 1
53
54  '#pwm-cells':
55    # should be 3. See pwm.yaml in this directory for a description of
56    # the cells format. The only third cell flag supported by this binding is
57    # PWM_POLARITY_INVERTED.
58    const: 3
59
60  clocks:
61    maxItems: 1
62
63  power-domains:
64    maxItems: 1
65
66  resets:
67    maxItems: 1
68
69required:
70  - compatible
71  - reg
72  - clocks
73  - power-domains
74
75allOf:
76  - $ref: pwm.yaml#
77
78  - if:
79      not:
80        properties:
81          compatible:
82            contains:
83              enum:
84                - renesas,tpu-r8a73a4
85                - renesas,tpu-r8a7740
86    then:
87      required:
88        - resets
89
90additionalProperties: false
91
92examples:
93  - |
94    #include <dt-bindings/clock/r8a7740-clock.h>
95
96    tpu: pwm@e6600000 {
97        compatible = "renesas,tpu-r8a7740", "renesas,tpu";
98        reg = <0xe6600000 0x148>;
99        clocks = <&mstp3_clks R8A7740_CLK_TPU0>;
100        power-domains = <&pd_a3sp>;
101        #pwm-cells = <3>;
102    };
103