Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml

   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
   7 title: Renesas Watchdog Timer (WDT) Controller
   8
   9 maintainers:
  10   - Wolfram Sang <wsa+renesas@sang-engineering.com>
  11   - Geert Uytterhoeven <geert+renesas@glider.be>
  12
  13 properties:
  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
 115 required:
 116   - compatible
 117   - reg
 118   - clocks
 119
 120 allOf:
 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
 189 additionalProperties: false
 190
 191 examples:
 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     };