xref: /linux/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/watchdog/renesas,wdt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas Watchdog Timer (WDT) Controller
8
9maintainers:
10  - Wolfram Sang <wsa+renesas@sang-engineering.com>
11  - Geert Uytterhoeven <geert+renesas@glider.be>
12
13properties:
14  compatible:
15    oneOf:
16      - items:
17          - enum:
18              - renesas,r7s72100-wdt     # RZ/A1
19              - renesas,r7s9210-wdt      # RZ/A2
20          - const: renesas,rza-wdt       # RZ/A
21
22      - items:
23          - enum:
24              - renesas,r9a06g032-wdt    # RZ/N1D
25          - const: renesas,rzn1-wdt      # RZ/N1
26
27      - items:
28          - enum:
29              - renesas,r9a07g043-wdt    # RZ/G2UL and RZ/Five
30              - renesas,r9a07g044-wdt    # RZ/G2{L,LC}
31              - renesas,r9a07g054-wdt    # RZ/V2L
32              - renesas,r9a08g045-wdt    # RZ/G3S
33          - const: renesas,rzg2l-wdt
34
35      - items:
36          - enum:
37              - renesas,r9a09g011-wdt    # RZ/V2M
38          - const: renesas,rzv2m-wdt     # RZ/V2M
39
40      - items:
41          - enum:
42              - renesas,r8a7742-wdt      # RZ/G1H
43              - renesas,r8a7743-wdt      # RZ/G1M
44              - renesas,r8a7744-wdt      # RZ/G1N
45              - renesas,r8a7745-wdt      # RZ/G1E
46              - renesas,r8a77470-wdt     # RZ/G1C
47              - renesas,r8a7790-wdt      # R-Car H2
48              - renesas,r8a7791-wdt      # R-Car M2-W
49              - renesas,r8a7792-wdt      # R-Car V2H
50              - renesas,r8a7793-wdt      # R-Car M2-N
51              - renesas,r8a7794-wdt      # R-Car E2
52          - const: renesas,rcar-gen2-wdt # R-Car Gen2 and RZ/G1
53
54      - items:
55          - enum:
56              - renesas,r8a774a1-wdt     # RZ/G2M
57              - renesas,r8a774b1-wdt     # RZ/G2N
58              - renesas,r8a774c0-wdt     # RZ/G2E
59              - renesas,r8a774e1-wdt     # RZ/G2H
60              - renesas,r8a7795-wdt      # R-Car H3
61              - renesas,r8a7796-wdt      # R-Car M3-W
62              - renesas,r8a77961-wdt     # R-Car M3-W+
63              - renesas,r8a77965-wdt     # R-Car M3-N
64              - renesas,r8a77970-wdt     # R-Car V3M
65              - renesas,r8a77980-wdt     # R-Car V3H
66              - renesas,r8a77990-wdt     # R-Car E3
67              - renesas,r8a77995-wdt     # R-Car D3
68          - const: renesas,rcar-gen3-wdt # R-Car Gen3 and RZ/G2
69
70      - items:
71          - enum:
72              - renesas,r8a779a0-wdt     # R-Car V3U
73              - renesas,r8a779f0-wdt     # R-Car S4-8
74              - renesas,r8a779g0-wdt     # R-Car V4H
75              - renesas,r8a779h0-wdt     # R-Car V4M
76          - const: renesas,rcar-gen4-wdt # R-Car Gen4
77
78      - const: renesas,r9a09g057-wdt       # RZ/V2H(P)
79
80  reg:
81    maxItems: 1
82
83  interrupts:
84    minItems: 1
85    items:
86      - description: Timeout
87      - description: Parity error
88
89  interrupt-names:
90    minItems: 1
91    items:
92      - const: wdt
93      - const: perrout
94
95  clocks:
96    minItems: 1
97    items:
98      - description: Register access clock
99      - description: Main clock
100
101  clock-names:
102    minItems: 1
103    items:
104      - const: pclk
105      - const: oscclk
106
107  power-domains:
108    maxItems: 1
109
110  resets:
111    maxItems: 1
112
113  timeout-sec: true
114
115required:
116  - compatible
117  - reg
118  - clocks
119
120allOf:
121  - $ref: watchdog.yaml#
122
123  - if:
124      not:
125        properties:
126          compatible:
127            contains:
128              enum:
129                - renesas,rza-wdt
130                - renesas,rzn1-wdt
131    then:
132      required:
133        - power-domains
134        - resets
135
136  - if:
137      properties:
138        compatible:
139          contains:
140            enum:
141              - renesas,r9a09g057-wdt
142              - renesas,rzg2l-wdt
143              - renesas,rzv2m-wdt
144    then:
145      properties:
146        clocks:
147          minItems: 2
148        clock-names:
149          minItems: 2
150      required:
151        - clock-names
152    else:
153      properties:
154        clocks:
155          maxItems: 1
156
157  - if:
158      properties:
159        compatible:
160          contains:
161            enum:
162              - renesas,rzg2l-wdt
163    then:
164      properties:
165        interrupts:
166          minItems: 2
167        interrupt-names:
168          minItems: 2
169      required:
170        - interrupt-names
171    else:
172      properties:
173        interrupts:
174          maxItems: 1
175
176  - if:
177      properties:
178        compatible:
179          contains:
180            const: renesas,r9a09g057-wdt
181    then:
182      properties:
183        interrupts: false
184        interrupt-names: false
185    else:
186      required:
187        - interrupts
188
189additionalProperties: false
190
191examples:
192  - |
193    #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
194    #include <dt-bindings/power/r8a7795-sysc.h>
195    #include <dt-bindings/interrupt-controller/arm-gic.h>
196    wdt0: watchdog@e6020000 {
197        compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
198        reg = <0xe6020000 0x0c>;
199        interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
200        clocks = <&cpg CPG_MOD 402>;
201        power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
202        resets = <&cpg 402>;
203        timeout-sec = <60>;
204    };
205