xref: /freebsd/sys/contrib/device-tree/Bindings/timer/renesas,tmu.yaml (revision c7a063741720ef81d4caa4613242579d12f1d605) 
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      - const: renesas,tmu
41
42  reg:
43    maxItems: 1
44
45  interrupts:
46    minItems: 2
47    maxItems: 3
48
49  clocks:
50    maxItems: 1
51
52  clock-names:
53    const: fck
54
55  power-domains:
56    maxItems: 1
57
58  resets:
59    maxItems: 1
60
61  '#renesas,channels':
62    description:
63      Number of channels implemented by the timer.
64    $ref: /schemas/types.yaml#/definitions/uint32
65    enum: [ 2, 3 ]
66    default: 3
67
68required:
69  - compatible
70  - reg
71  - interrupts
72  - clocks
73  - clock-names
74  - power-domains
75
76if:
77  not:
78    properties:
79      compatible:
80        contains:
81          enum:
82            - renesas,tmu-r8a7740
83            - renesas,tmu-r8a7778
84            - renesas,tmu-r8a7779
85then:
86  required:
87    - resets
88
89additionalProperties: false
90
91examples:
92  - |
93    #include <dt-bindings/clock/r8a7779-clock.h>
94    #include <dt-bindings/interrupt-controller/arm-gic.h>
95    #include <dt-bindings/power/r8a7779-sysc.h>
96    tmu0: timer@ffd80000 {
97            compatible = "renesas,tmu-r8a7779", "renesas,tmu";
98            reg = <0xffd80000 0x30>;
99            interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
100                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
101                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
102            clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
103            clock-names = "fck";
104            power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
105            #renesas,channels = <3>;
106    };
107