xref: /linux/Documentation/devicetree/bindings/timer/renesas,tmu.yaml (revision be239684b18e1cdcafcf8c7face4a2f562c745ad) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/timer/renesas,tmu.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas R-Mobile/R-Car Timer Unit (TMU)
8
9maintainers:
10  - Geert Uytterhoeven <geert+renesas@glider.be>
11  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
12
13description:
14  The TMU is a 32-bit timer/counter with configurable clock inputs and
15  programmable compare match.
16
17  Channels share hardware resources but their counter and compare match value
18  are independent. The TMU hardware supports up to three channels.
19
20properties:
21  compatible:
22    items:
23      - enum:
24          - renesas,tmu-r8a7740  # R-Mobile A1
25          - renesas,tmu-r8a774a1 # RZ/G2M
26          - renesas,tmu-r8a774b1 # RZ/G2N
27          - renesas,tmu-r8a774c0 # RZ/G2E
28          - renesas,tmu-r8a774e1 # RZ/G2H
29          - renesas,tmu-r8a7778  # R-Car M1A
30          - renesas,tmu-r8a7779  # R-Car H1
31          - renesas,tmu-r8a7795  # R-Car H3
32          - renesas,tmu-r8a7796  # R-Car M3-W
33          - renesas,tmu-r8a77961 # R-Car M3-W+
34          - renesas,tmu-r8a77965 # R-Car M3-N
35          - renesas,tmu-r8a77970 # R-Car V3M
36          - renesas,tmu-r8a77980 # R-Car V3H
37          - renesas,tmu-r8a77990 # R-Car E3
38          - renesas,tmu-r8a77995 # R-Car D3
39          - renesas,tmu-r8a779a0 # R-Car V3U
40          - renesas,tmu-r8a779f0 # R-Car S4-8
41          - renesas,tmu-r8a779g0 # R-Car V4H
42      - const: renesas,tmu
43
44  reg:
45    maxItems: 1
46
47  interrupts:
48    minItems: 2
49    maxItems: 3
50
51  clocks:
52    maxItems: 1
53
54  clock-names:
55    const: fck
56
57  power-domains:
58    maxItems: 1
59
60  resets:
61    maxItems: 1
62
63  '#renesas,channels':
64    description:
65      Number of channels implemented by the timer.
66    $ref: /schemas/types.yaml#/definitions/uint32
67    enum: [ 2, 3 ]
68    default: 3
69
70required:
71  - compatible
72  - reg
73  - interrupts
74  - clocks
75  - clock-names
76  - power-domains
77
78if:
79  not:
80    properties:
81      compatible:
82        contains:
83          enum:
84            - renesas,tmu-r8a7740
85            - renesas,tmu-r8a7778
86            - renesas,tmu-r8a7779
87then:
88  required:
89    - resets
90
91additionalProperties: false
92
93examples:
94  - |
95    #include <dt-bindings/clock/r8a7779-clock.h>
96    #include <dt-bindings/interrupt-controller/arm-gic.h>
97    #include <dt-bindings/power/r8a7779-sysc.h>
98    tmu0: timer@ffd80000 {
99            compatible = "renesas,tmu-r8a7779", "renesas,tmu";
100            reg = <0xffd80000 0x30>;
101            interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
102                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
103                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
104            clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
105            clock-names = "fck";
106            power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
107            #renesas,channels = <3>;
108    };
109