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| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/renesas-wdt.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt b/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt new file mode 100644 index 000000000..9407212a8 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt @@ -0,0 +1,44 @@ +Renesas Watchdog Timer (WDT) Controller + +Required properties: + - compatible : Must be "renesas,<soctype>-wdt", followed by a generic + fallback compatible string when compatible with the generic + version. + Examples with soctypes are: + - "renesas,r8a7743-wdt" (RZ/G1M) + - "renesas,r8a7745-wdt" (RZ/G1E) + - "renesas,r8a774a1-wdt" (RZ/G2M) + - "renesas,r8a7790-wdt" (R-Car H2) + - "renesas,r8a7791-wdt" (R-Car M2-W) + - "renesas,r8a7792-wdt" (R-Car V2H) + - "renesas,r8a7793-wdt" (R-Car M2-N) + - "renesas,r8a7794-wdt" (R-Car E2) + - "renesas,r8a7795-wdt" (R-Car H3) + - "renesas,r8a7796-wdt" (R-Car M3-W) + - "renesas,r8a77965-wdt" (R-Car M3-N) + - "renesas,r8a77970-wdt" (R-Car V3M) + - "renesas,r8a77990-wdt" (R-Car E3) + - "renesas,r8a77995-wdt" (R-Car D3) + - "renesas,r7s72100-wdt" (RZ/A1) + The generic compatible string must be: + - "renesas,rza-wdt" for RZ/A + - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G1 + - "renesas,rcar-gen3-wdt" for R-Car Gen3 and RZ/G2 + +- reg : Should contain WDT registers location and length +- clocks : the clock feeding the watchdog timer. + +Optional properties: +- timeout-sec : Contains the watchdog timeout in seconds +- power-domains : the power domain the WDT belongs to +- interrupts: Some WDTs have an interrupt when used in interval timer mode + +Examples: + + wdt0: watchdog@e6020000 { + compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt"; + reg = <0 0xe6020000 0 0x0c>; + clocks = <&cpg CPG_MOD 402>; + power-domains = <&cpg>; + timeout-sec = <60>; + }; |