1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/timer/renesas,cmt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas Compare Match Timer (CMT)
8
9maintainers:
10  - Geert Uytterhoeven <geert+renesas@glider.be>
11  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
12
13description:
14  The CMT is a multi-channel 16/32/48-bit timer/counter with configurable clock
15  inputs and programmable compare match.
16
17  Channels share hardware resources but their counter and compare match values
18  are independent. A particular CMT instance can implement only a subset of the
19  channels supported by the CMT model. Channel indices represent the hardware
20  position of the channel in the CMT and don't match the channel numbers in the
21  datasheets.
22
23properties:
24  compatible:
25    oneOf:
26      - items:
27          - enum:
28              - renesas,r8a7740-cmt0      # 32-bit CMT0 on R-Mobile A1
29              - renesas,r8a7740-cmt1      # 48-bit CMT1 on R-Mobile A1
30              - renesas,r8a7740-cmt2      # 32-bit CMT2 on R-Mobile A1
31              - renesas,r8a7740-cmt3      # 32-bit CMT3 on R-Mobile A1
32              - renesas,r8a7740-cmt4      # 32-bit CMT4 on R-Mobile A1
33              - renesas,sh73a0-cmt0       # 32-bit CMT0 on SH-Mobile AG5
34              - renesas,sh73a0-cmt1       # 48-bit CMT1 on SH-Mobile AG5
35              - renesas,sh73a0-cmt2       # 32-bit CMT2 on SH-Mobile AG5
36              - renesas,sh73a0-cmt3       # 32-bit CMT3 on SH-Mobile AG5
37              - renesas,sh73a0-cmt4       # 32-bit CMT4 on SH-Mobile AG5
38
39      - items:
40          - enum:
41              - renesas,r8a73a4-cmt0      # 32-bit CMT0 on R-Mobile APE6
42              - renesas,r8a7742-cmt0      # 32-bit CMT0 on RZ/G1H
43              - renesas,r8a7743-cmt0      # 32-bit CMT0 on RZ/G1M
44              - renesas,r8a7744-cmt0      # 32-bit CMT0 on RZ/G1N
45              - renesas,r8a7745-cmt0      # 32-bit CMT0 on RZ/G1E
46              - renesas,r8a77470-cmt0     # 32-bit CMT0 on RZ/G1C
47              - renesas,r8a7790-cmt0      # 32-bit CMT0 on R-Car H2
48              - renesas,r8a7791-cmt0      # 32-bit CMT0 on R-Car M2-W
49              - renesas,r8a7792-cmt0      # 32-bit CMT0 on R-Car V2H
50              - renesas,r8a7793-cmt0      # 32-bit CMT0 on R-Car M2-N
51              - renesas,r8a7794-cmt0      # 32-bit CMT0 on R-Car E2
52          - const: renesas,rcar-gen2-cmt0 # 32-bit CMT0 on R-Mobile APE6, R-Car Gen2 and RZ/G1
53
54      - items:
55          - enum:
56              - renesas,r8a73a4-cmt1      # 48-bit CMT1 on R-Mobile APE6
57              - renesas,r8a7742-cmt1      # 48-bit CMT1 on RZ/G1H
58              - renesas,r8a7743-cmt1      # 48-bit CMT1 on RZ/G1M
59              - renesas,r8a7744-cmt1      # 48-bit CMT1 on RZ/G1N
60              - renesas,r8a7745-cmt1      # 48-bit CMT1 on RZ/G1E
61              - renesas,r8a77470-cmt1     # 48-bit CMT1 on RZ/G1C
62              - renesas,r8a7790-cmt1      # 48-bit CMT1 on R-Car H2
63              - renesas,r8a7791-cmt1      # 48-bit CMT1 on R-Car M2-W
64              - renesas,r8a7792-cmt1      # 48-bit CMT1 on R-Car V2H
65              - renesas,r8a7793-cmt1      # 48-bit CMT1 on R-Car M2-N
66              - renesas,r8a7794-cmt1      # 48-bit CMT1 on R-Car E2
67          - const: renesas,rcar-gen2-cmt1 # 48-bit CMT1 on R-Mobile APE6, R-Car Gen2 and RZ/G1
68
69      - items:
70          - enum:
71              - renesas,r8a774a1-cmt0     # 32-bit CMT0 on RZ/G2M
72              - renesas,r8a774b1-cmt0     # 32-bit CMT0 on RZ/G2N
73              - renesas,r8a774c0-cmt0     # 32-bit CMT0 on RZ/G2E
74              - renesas,r8a774e1-cmt0     # 32-bit CMT0 on RZ/G2H
75              - renesas,r8a7795-cmt0      # 32-bit CMT0 on R-Car H3
76              - renesas,r8a7796-cmt0      # 32-bit CMT0 on R-Car M3-W
77              - renesas,r8a77961-cmt0     # 32-bit CMT0 on R-Car M3-W+
78              - renesas,r8a77965-cmt0     # 32-bit CMT0 on R-Car M3-N
79              - renesas,r8a77970-cmt0     # 32-bit CMT0 on R-Car V3M
80              - renesas,r8a77980-cmt0     # 32-bit CMT0 on R-Car V3H
81              - renesas,r8a77990-cmt0     # 32-bit CMT0 on R-Car E3
82              - renesas,r8a77995-cmt0     # 32-bit CMT0 on R-Car D3
83              - renesas,r8a779a0-cmt0     # 32-bit CMT0 on R-Car V3U
84          - const: renesas,rcar-gen3-cmt0 # 32-bit CMT0 on R-Car Gen3 and RZ/G2
85
86      - items:
87          - enum:
88              - renesas,r8a774a1-cmt1     # 48-bit CMT on RZ/G2M
89              - renesas,r8a774b1-cmt1     # 48-bit CMT on RZ/G2N
90              - renesas,r8a774c0-cmt1     # 48-bit CMT on RZ/G2E
91              - renesas,r8a774e1-cmt1     # 48-bit CMT on RZ/G2H
92              - renesas,r8a7795-cmt1      # 48-bit CMT on R-Car H3
93              - renesas,r8a7796-cmt1      # 48-bit CMT on R-Car M3-W
94              - renesas,r8a77961-cmt1     # 48-bit CMT on R-Car M3-W+
95              - renesas,r8a77965-cmt1     # 48-bit CMT on R-Car M3-N
96              - renesas,r8a77970-cmt1     # 48-bit CMT on R-Car V3M
97              - renesas,r8a77980-cmt1     # 48-bit CMT on R-Car V3H
98              - renesas,r8a77990-cmt1     # 48-bit CMT on R-Car E3
99              - renesas,r8a77995-cmt1     # 48-bit CMT on R-Car D3
100              - renesas,r8a779a0-cmt1     # 48-bit CMT on R-Car V3U
101          - const: renesas,rcar-gen3-cmt1 # 48-bit CMT on R-Car Gen3 and RZ/G2
102
103  reg:
104    maxItems: 1
105
106  interrupts:
107    minItems: 1
108    maxItems: 8
109
110  clocks:
111    maxItems: 1
112
113  clock-names:
114    const: fck
115
116  power-domains:
117    maxItems: 1
118
119  resets:
120    maxItems: 1
121
122required:
123  - compatible
124  - reg
125  - interrupts
126  - clocks
127  - clock-names
128  - power-domains
129
130allOf:
131  - if:
132      properties:
133        compatible:
134          contains:
135            enum:
136              - renesas,rcar-gen2-cmt0
137              - renesas,rcar-gen3-cmt0
138    then:
139      properties:
140        interrupts:
141          minItems: 2
142          maxItems: 2
143
144  - if:
145      properties:
146        compatible:
147          contains:
148            enum:
149              - renesas,rcar-gen2-cmt1
150              - renesas,rcar-gen3-cmt1
151    then:
152      properties:
153        interrupts:
154          minItems: 8
155          maxItems: 8
156
157additionalProperties: false
158
159examples:
160  - |
161    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
162    #include <dt-bindings/interrupt-controller/arm-gic.h>
163    #include <dt-bindings/power/r8a7790-sysc.h>
164    cmt0: timer@ffca0000 {
165            compatible = "renesas,r8a7790-cmt0", "renesas,rcar-gen2-cmt0";
166            reg = <0xffca0000 0x1004>;
167            interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>,
168                         <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
169            clocks = <&cpg CPG_MOD 124>;
170            clock-names = "fck";
171            power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
172            resets = <&cpg 124>;
173    };
174
175    cmt1: timer@e6130000 {
176            compatible = "renesas,r8a7790-cmt1", "renesas,rcar-gen2-cmt1";
177            reg = <0xe6130000 0x1004>;
178            interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
179                         <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
180                         <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
181                         <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
182                         <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
183                         <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
184                         <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>,
185                         <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>;
186            clocks = <&cpg CPG_MOD 329>;
187            clock-names = "fck";
188            power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
189            resets = <&cpg 329>;
190    };
191