xref: /linux/Documentation/devicetree/bindings/timer/renesas,tmu.yaml (revision 4fd18fc38757217c746aa063ba9e4729814dc737) 
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-r8a77970 # R-Car V3M
32          - renesas,tmu-r8a77980 # R-Car V3H
33      - const: renesas,tmu
34
35  reg:
36    maxItems: 1
37
38  interrupts:
39    minItems: 2
40    maxItems: 3
41
42  clocks:
43    maxItems: 1
44
45  clock-names:
46    const: fck
47
48  power-domains:
49    maxItems: 1
50
51  resets:
52    maxItems: 1
53
54  '#renesas,channels':
55    description:
56      Number of channels implemented by the timer.
57    $ref: /schemas/types.yaml#/definitions/uint32
58    enum: [ 2, 3 ]
59    default: 3
60
61required:
62  - compatible
63  - reg
64  - interrupts
65  - clocks
66  - clock-names
67  - power-domains
68
69if:
70  not:
71    properties:
72      compatible:
73        contains:
74          enum:
75            - renesas,tmu-r8a7740
76            - renesas,tmu-r8a7778
77            - renesas,tmu-r8a7779
78then:
79  required:
80    - resets
81
82additionalProperties: false
83
84examples:
85  - |
86    #include <dt-bindings/clock/r8a7779-clock.h>
87    #include <dt-bindings/interrupt-controller/arm-gic.h>
88    #include <dt-bindings/power/r8a7779-sysc.h>
89    tmu0: timer@ffd80000 {
90            compatible = "renesas,tmu-r8a7779", "renesas,tmu";
91            reg = <0xffd80000 0x30>;
92            interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
93                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
94                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
95            clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
96            clock-names = "fck";
97            power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
98            #renesas,channels = <3>;
99    };
100