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Document support for the Watchdog Timer (WDT) Controller in the Renesas R-Car E3 (R8A77990) SoC. No driver update is needed. Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
44 lines
1.5 KiB
Plaintext
44 lines
1.5 KiB
Plaintext
Renesas Watchdog Timer (WDT) Controller
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Required properties:
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- compatible : Must be "renesas,<soctype>-wdt", followed by a generic
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fallback compatible string when compatible with the generic
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version.
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Examples with soctypes are:
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- "renesas,r8a7743-wdt" (RZ/G1M)
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- "renesas,r8a7745-wdt" (RZ/G1E)
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- "renesas,r8a7790-wdt" (R-Car H2)
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- "renesas,r8a7791-wdt" (R-Car M2-W)
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- "renesas,r8a7792-wdt" (R-Car V2H)
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- "renesas,r8a7793-wdt" (R-Car M2-N)
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- "renesas,r8a7794-wdt" (R-Car E2)
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- "renesas,r8a7795-wdt" (R-Car H3)
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- "renesas,r8a7796-wdt" (R-Car M3-W)
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- "renesas,r8a77965-wdt" (R-Car M3-N)
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- "renesas,r8a77970-wdt" (R-Car V3M)
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- "renesas,r8a77990-wdt" (R-Car E3)
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- "renesas,r8a77995-wdt" (R-Car D3)
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- "renesas,r7s72100-wdt" (RZ/A1)
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The generic compatible string must be:
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- "renesas,rza-wdt" for RZ/A
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- "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G
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- "renesas,rcar-gen3-wdt" for R-Car Gen3
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- reg : Should contain WDT registers location and length
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- clocks : the clock feeding the watchdog timer.
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Optional properties:
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- timeout-sec : Contains the watchdog timeout in seconds
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- power-domains : the power domain the WDT belongs to
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- interrupts: Some WDTs have an interrupt when used in interval timer mode
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Examples:
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wdt0: watchdog@e6020000 {
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compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
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reg = <0 0xe6020000 0 0x0c>;
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clocks = <&cpg CPG_MOD 402>;
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power-domains = <&cpg>;
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timeout-sec = <60>;
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};
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