xref: /linux/Documentation/devicetree/bindings/timer/renesas,tmu.yaml (revision 90d32e92011eaae8e70a9169b4e7acf4ca8f9d3a) 
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          - renesas,tmu-r8a779h0 # R-Car V4M
43      - const: renesas,tmu
44
45  reg:
46    maxItems: 1
47
48  interrupts:
49    minItems: 2
50    items:
51      - description: Underflow interrupt, channel 0
52      - description: Underflow interrupt, channel 1
53      - description: Underflow interrupt, channel 2
54      - description: Input capture interrupt, channel 2
55
56  interrupt-names:
57    minItems: 2
58    items:
59      - const: tuni0
60      - const: tuni1
61      - const: tuni2
62      - const: ticpi2
63
64  clocks:
65    maxItems: 1
66
67  clock-names:
68    const: fck
69
70  power-domains:
71    maxItems: 1
72
73  resets:
74    maxItems: 1
75
76  '#renesas,channels':
77    description:
78      Number of channels implemented by the timer.
79    $ref: /schemas/types.yaml#/definitions/uint32
80    enum: [ 2, 3 ]
81    default: 3
82
83required:
84  - compatible
85  - reg
86  - interrupts
87  - clocks
88  - clock-names
89  - power-domains
90
91if:
92  not:
93    properties:
94      compatible:
95        contains:
96          enum:
97            - renesas,tmu-r8a7740
98            - renesas,tmu-r8a7778
99            - renesas,tmu-r8a7779
100then:
101  required:
102    - resets
103
104additionalProperties: false
105
106examples:
107  - |
108    #include <dt-bindings/clock/r8a7779-clock.h>
109    #include <dt-bindings/interrupt-controller/arm-gic.h>
110    #include <dt-bindings/power/r8a7779-sysc.h>
111    tmu0: timer@ffd80000 {
112            compatible = "renesas,tmu-r8a7779", "renesas,tmu";
113            reg = <0xffd80000 0x30>;
114            interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
115                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
116                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
117                         <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
118            interrupt-names = "tuni0", "tuni1", "tuni2", "ticpi2";
119            clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
120            clock-names = "fck";
121            power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
122            #renesas,channels = <3>;
123    };
124