* Samsung's Watchdog Timer Controller The Samsung's Watchdog controller is used for resuming system operation after a preset amount of time during which the WDT reset event has not occurred. Required properties: - compatible : should be one among the following - "samsung,s3c2410-wdt" for S3C2410 - "samsung,s3c6410-wdt" for S3C6410, S5PV210 and Exynos4 - "samsung,exynos5250-wdt" for Exynos5250 - "samsung,exynos5420-wdt" for Exynos5420 - "samsung,exynos7-wdt" for Exynos7 - reg : base physical address of the controller and length of memory mapped region. - interrupts : interrupt number to the cpu. - samsung,syscon-phandle : reference to syscon node (This property required only in case of compatible being "samsung,exynos5250-wdt" or "samsung,exynos5420-wdt". In case of Exynos5250 and 5420 this property points to syscon node holding the PMU base address) Optional properties: - timeout-sec : contains the watchdog timeout in seconds. Example: watchdog@101d0000 { compatible = "samsung,exynos5250-wdt"; reg = <0x101D0000 0x100>; interrupts = <0 42 0>; clocks = <&clock 336>; clock-names = "watchdog"; samsung,syscon-phandle = <&pmu_syscon>; };