Documentation/devicetree/bindings/watchdog/renesas-wdt.txt

   1 Renesas Watchdog Timer (WDT) Controller
   2
   3 Required properties:
   4  - compatible : Must be "renesas,<soctype>-wdt", followed by a generic
   5                 fallback compatible string when compatible with the generic
   6                 version.
   7                Examples with soctypes are:
   8                  - "renesas,r8a7743-wdt" (RZ/G1M)
   9                  - "renesas,r8a7744-wdt" (RZ/G1N)
  10                  - "renesas,r8a7745-wdt" (RZ/G1E)
  11                  - "renesas,r8a77470-wdt" (RZ/G1C)
  12                  - "renesas,r8a774a1-wdt" (RZ/G2M)
  13                  - "renesas,r8a774c0-wdt" (RZ/G2E)
  14                  - "renesas,r8a7790-wdt" (R-Car H2)
  15                  - "renesas,r8a7791-wdt" (R-Car M2-W)
  16                  - "renesas,r8a7792-wdt" (R-Car V2H)
  17                  - "renesas,r8a7793-wdt" (R-Car M2-N)
  18                  - "renesas,r8a7794-wdt" (R-Car E2)
  19                  - "renesas,r8a7795-wdt" (R-Car H3)
  20                  - "renesas,r8a7796-wdt" (R-Car M3-W)
  21                  - "renesas,r8a77965-wdt" (R-Car M3-N)
  22                  - "renesas,r8a77970-wdt" (R-Car V3M)
  23                  - "renesas,r8a77990-wdt" (R-Car E3)
  24                  - "renesas,r8a77995-wdt" (R-Car D3)
  25                  - "renesas,r7s72100-wdt" (RZ/A1)
  26                  - "renesas,r7s9210-wdt"  (RZ/A2)
  27                 The generic compatible string must be:
  28                  - "renesas,rza-wdt" for RZ/A
  29                  - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G1
  30                  - "renesas,rcar-gen3-wdt" for R-Car Gen3 and RZ/G2
  31
  32 - reg : Should contain WDT registers location and length
  33 - clocks : the clock feeding the watchdog timer.
  34
  35 Optional properties:
  36 - timeout-sec : Contains the watchdog timeout in seconds
  37 - power-domains : the power domain the WDT belongs to
  38 - interrupts: Some WDTs have an interrupt when used in interval timer mode
  39
  40 Examples:
  41
  42         wdt0: watchdog@e6020000 {
  43                 compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
  44                 reg = <0 0xe6020000 0 0x0c>;
  45                 clocks = <&cpg CPG_MOD 402>;
  46                 power-domains = <&cpg>;
  47                 timeout-sec = <60>;
  48         };