xref: /freebsd/sys/contrib/device-tree/Bindings/timer/renesas,tmu.yaml (revision 7ef62cebc2f965b0f640263e179276928885e33d) 
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      - const: renesas,tmu
42
43  reg:
44    maxItems: 1
45
46  interrupts:
47    minItems: 2
48    maxItems: 3
49
50  clocks:
51    maxItems: 1
52
53  clock-names:
54    const: fck
55
56  power-domains:
57    maxItems: 1
58
59  resets:
60    maxItems: 1
61
62  '#renesas,channels':
63    description:
64      Number of channels implemented by the timer.
65    $ref: /schemas/types.yaml#/definitions/uint32
66    enum: [ 2, 3 ]
67    default: 3
68
69required:
70  - compatible
71  - reg
72  - interrupts
73  - clocks
74  - clock-names
75  - power-domains
76
77if:
78  not:
79    properties:
80      compatible:
81        contains:
82          enum:
83            - renesas,tmu-r8a7740
84            - renesas,tmu-r8a7778
85            - renesas,tmu-r8a7779
86then:
87  required:
88    - resets
89
90additionalProperties: false
91
92examples:
93  - |
94    #include <dt-bindings/clock/r8a7779-clock.h>
95    #include <dt-bindings/interrupt-controller/arm-gic.h>
96    #include <dt-bindings/power/r8a7779-sysc.h>
97    tmu0: timer@ffd80000 {
98            compatible = "renesas,tmu-r8a7779", "renesas,tmu";
99            reg = <0xffd80000 0x30>;
100            interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
101                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
102                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
103            clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
104            clock-names = "fck";
105            power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
106            #renesas,channels = <3>;
107    };
108