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               - renesas,r8a779h0-wdt     # R-Car V4M
  75           - const: renesas,rcar-gen4-wdt # R-Car Gen4
  76
  77   reg:
  78     maxItems: 1
  79
  80   interrupts:
  81     minItems: 1
  82     items:
  83       - description: Timeout
  84       - description: Parity error
  85
  86   interrupt-names:
  87     minItems: 1
  88     items:
  89       - const: wdt
  90       - const: perrout
  91
  92   clocks:
  93     minItems: 1
  94     items:
  95       - description: Register access clock
  96       - description: Main clock
  97
  98   clock-names:
  99     minItems: 1
 100     items:
 101       - const: pclk
 102       - const: oscclk
 103
 104   power-domains:
 105     maxItems: 1
 106
 107   resets:
 108     maxItems: 1
 109
 110   timeout-sec: true
 111
 112 required:
 113   - compatible
 114   - reg
 115   - interrupts
 116   - clocks
 117
 118 allOf:
 119   - $ref: watchdog.yaml#
 120
 121   - if:
 122       not:
 123         properties:
 124           compatible:
 125             contains:
 126               enum:
 127                 - renesas,rza-wdt
 128                 - renesas,rzn1-wdt
 129     then:
 130       required:
 131         - power-domains
 132         - resets
 133
 134   - if:
 135       properties:
 136         compatible:
 137           contains:
 138             enum:
 139               - renesas,rzg2l-wdt
 140               - renesas,rzv2m-wdt
 141     then:
 142       properties:
 143         clocks:
 144           minItems: 2
 145         clock-names:
 146           minItems: 2
 147       required:
 148         - clock-names
 149     else:
 150       properties:
 151         clocks:
 152           maxItems: 1
 153
 154   - if:
 155       properties:
 156         compatible:
 157           contains:
 158             enum:
 159               - renesas,rzg2l-wdt
 160     then:
 161       properties:
 162         interrupts:
 163           minItems: 2
 164         interrupt-names:
 165           minItems: 2
 166       required:
 167         - interrupt-names
 168     else:
 169       properties:
 170         interrupts:
 171           maxItems: 1
 172
 173 additionalProperties: false
 174
 175 examples:
 176   - |
 177     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
 178     #include <dt-bindings/power/r8a7795-sysc.h>
 179     #include <dt-bindings/interrupt-controller/arm-gic.h>
 180     wdt0: watchdog@e6020000 {
 181         compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
 182         reg = <0xe6020000 0x0c>;
 183         interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
 184         clocks = <&cpg CPG_MOD 402>;
 185         power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 186         resets = <&cpg 402>;
 187         timeout-sec = <60>;
 188     };