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
7 title: Renesas R-Mobile/R-Car Timer Unit (TMU)
8
9 maintainers:
10 - Geert Uytterhoeven <geert+renesas@glider.be>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
12
13 description:
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
20 properties:
21 compatible:
22 items:
23 - enum:
24 - renesas,tmu-r8a73a4 # R-Mobile APE6
25 - renesas,tmu-r8a7740 # R-Mobile A1
26 - renesas,tmu-r8a7742 # RZ/G1H
27 - renesas,tmu-r8a7743 # RZ/G1M
28 - renesas,tmu-r8a7744 # RZ/G1N
29 - renesas,tmu-r8a7745 # RZ/G1E
30 - renesas,tmu-r8a77470 # RZ/G1C
31 - renesas,tmu-r8a774a1 # RZ/G2M
32 - renesas,tmu-r8a774b1 # RZ/G2N
33 - renesas,tmu-r8a774c0 # RZ/G2E
34 - renesas,tmu-r8a774e1 # RZ/G2H
35 - renesas,tmu-r8a7778 # R-Car M1A
36 - renesas,tmu-r8a7779 # R-Car H1
37 - renesas,tmu-r8a7790 # R-Car H2
38 - renesas,tmu-r8a7791 # R-Car M2-W
39 - renesas,tmu-r8a7792 # R-Car V2H
40 - renesas,tmu-r8a7793 # R-Car M2-N
41 - renesas,tmu-r8a7794 # R-Car E2
42 - renesas,tmu-r8a7795 # R-Car H3
43 - renesas,tmu-r8a7796 # R-Car M3-W
44 - renesas,tmu-r8a77961 # R-Car M3-W+
45 - renesas,tmu-r8a77965 # R-Car M3-N
46 - renesas,tmu-r8a77970 # R-Car V3M
47 - renesas,tmu-r8a77980 # R-Car V3H
48 - renesas,tmu-r8a77990 # R-Car E3
49 - renesas,tmu-r8a77995 # R-Car D3
50 - renesas,tmu-r8a779a0 # R-Car V3U
51 - renesas,tmu-r8a779f0 # R-Car S4-8
52 - renesas,tmu-r8a779g0 # R-Car V4H
53 - renesas,tmu-r8a779h0 # R-Car V4M
54 - const: renesas,tmu
55
56 reg:
57 maxItems: 1
58
59 interrupts:
60 minItems: 2
61 items:
62 - description: Underflow interrupt, channel 0
63 - description: Underflow interrupt, channel 1
64 - description: Underflow interrupt, channel 2
65 - description: Input capture interrupt, channel 2
66
67 interrupt-names:
68 minItems: 2
69 items:
70 - const: tuni0
71 - const: tuni1
72 - const: tuni2
73 - const: ticpi2
74
75 clocks:
76 maxItems: 1
77
78 clock-names:
79 const: fck
80
81 power-domains:
82 maxItems: 1
83
84 resets:
85 maxItems: 1
86
87 '#renesas,channels':
88 description:
89 Number of channels implemented by the timer.
90 $ref: /schemas/types.yaml#/definitions/uint32
91 enum: [ 2, 3 ]
92 default: 3
93
94 required:
95 - compatible
96 - reg
97 - interrupts
98 - interrupt-names
99 - clocks
100 - clock-names
101 - power-domains
102
103 if:
104 not:
105 properties:
106 compatible:
107 contains:
108 enum:
109 - renesas,tmu-r8a73a4
110 - renesas,tmu-r8a7740
111 - renesas,tmu-r8a7778
112 - renesas,tmu-r8a7779
113 then:
114 required:
115 - resets
116
117 additionalProperties: false
118
119 examples:
120 - |
121 #include <dt-bindings/clock/r8a7779-clock.h>
122 #include <dt-bindings/interrupt-controller/arm-gic.h>
123 #include <dt-bindings/power/r8a7779-sysc.h>
124 tmu0: timer@ffd80000 {
125 compatible = "renesas,tmu-r8a7779", "renesas,tmu";
126 reg = <0xffd80000 0x30>;
127 interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
128 <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
129 <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
130 <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
131 interrupt-names = "tuni0", "tuni1", "tuni2", "ticpi2";
132 clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
133 clock-names = "fck";
134 power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
135 #renesas,channels = <3>;
136 };
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