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           - const: renesas,rzg2l-wdt
  33
  34       - items:
  35           - enum:
  36               - renesas,r9a09g011-wdt    # RZ/V2M
  37           - const: renesas,rzv2m-wdt     # RZ/V2M
  38
  39       - items:
  40           - enum:
  41               - renesas,r8a7742-wdt      # RZ/G1H
  42               - renesas,r8a7743-wdt      # RZ/G1M
  43               - renesas,r8a7744-wdt      # RZ/G1N
  44               - renesas,r8a7745-wdt      # RZ/G1E
  45               - renesas,r8a77470-wdt     # RZ/G1C
  46               - renesas,r8a7790-wdt      # R-Car H2
  47               - renesas,r8a7791-wdt      # R-Car M2-W
  48               - renesas,r8a7792-wdt      # R-Car V2H
  49               - renesas,r8a7793-wdt      # R-Car M2-N
  50               - renesas,r8a7794-wdt      # R-Car E2
  51           - const: renesas,rcar-gen2-wdt # R-Car Gen2 and RZ/G1
  52
  53       - items:
  54           - enum:
  55               - renesas,r8a774a1-wdt     # RZ/G2M
  56               - renesas,r8a774b1-wdt     # RZ/G2N
  57               - renesas,r8a774c0-wdt     # RZ/G2E
  58               - renesas,r8a774e1-wdt     # RZ/G2H
  59               - renesas,r8a7795-wdt      # R-Car H3
  60               - renesas,r8a7796-wdt      # R-Car M3-W
  61               - renesas,r8a77961-wdt     # R-Car M3-W+
  62               - renesas,r8a77965-wdt     # R-Car M3-N
  63               - renesas,r8a77970-wdt     # R-Car V3M
  64               - renesas,r8a77980-wdt     # R-Car V3H
  65               - renesas,r8a77990-wdt     # R-Car E3
  66               - renesas,r8a77995-wdt     # R-Car D3
  67           - const: renesas,rcar-gen3-wdt # R-Car Gen3 and RZ/G2
  68
  69       - items:
  70           - enum:
  71               - renesas,r8a779a0-wdt     # R-Car V3U
  72               - renesas,r8a779f0-wdt     # R-Car S4-8
  73               - renesas,r8a779g0-wdt     # R-Car V4H
  74           - const: renesas,rcar-gen4-wdt # R-Car Gen4
  75
  76   reg:
  77     maxItems: 1
  78
  79   interrupts:
  80     minItems: 1
  81     items:
  82       - description: Timeout
  83       - description: Parity error
  84
  85   interrupt-names:
  86     minItems: 1
  87     items:
  88       - const: wdt
  89       - const: perrout
  90
  91   clocks:
  92     minItems: 1
  93     items:
  94       - description: Register access clock
  95       - description: Main clock
  96
  97   clock-names:
  98     minItems: 1
  99     items:
 100       - const: pclk
 101       - const: oscclk
 102
 103   power-domains:
 104     maxItems: 1
 105
 106   resets:
 107     maxItems: 1
 108
 109   timeout-sec: true
 110
 111 required:
 112   - compatible
 113   - reg
 114   - interrupts
 115   - clocks
 116
 117 allOf:
 118   - $ref: watchdog.yaml#
 119
 120   - if:
 121       not:
 122         properties:
 123           compatible:
 124             contains:
 125               enum:
 126                 - renesas,rza-wdt
 127                 - renesas,rzn1-wdt
 128     then:
 129       required:
 130         - power-domains
 131         - resets
 132
 133   - if:
 134       properties:
 135         compatible:
 136           contains:
 137             enum:
 138               - renesas,rzg2l-wdt
 139               - renesas,rzv2m-wdt
 140     then:
 141       properties:
 142         clocks:
 143           minItems: 2
 144         clock-names:
 145           minItems: 2
 146       required:
 147         - clock-names
 148     else:
 149       properties:
 150         clocks:
 151           maxItems: 1
 152
 153   - if:
 154       properties:
 155         compatible:
 156           contains:
 157             enum:
 158               - renesas,rzg2l-wdt
 159     then:
 160       properties:
 161         interrupts:
 162           minItems: 2
 163         interrupt-names:
 164           minItems: 2
 165       required:
 166         - interrupt-names
 167     else:
 168       properties:
 169         interrupts:
 170           maxItems: 1
 171
 172 additionalProperties: false
 173
 174 examples:
 175   - |
 176     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
 177     #include <dt-bindings/power/r8a7795-sysc.h>
 178     #include <dt-bindings/interrupt-controller/arm-gic.h>
 179     wdt0: watchdog@e6020000 {
 180         compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
 181         reg = <0xe6020000 0x0c>;
 182         interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 183         clocks = <&cpg CPG_MOD 402>;
 184         power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 185         resets = <&cpg 402>;
 186         timeout-sec = <60>;
 187     };