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Diffstat (limited to 'dts/Bindings/watchdog/samsung-wdt.txt')
| -rw-r--r-- | dts/Bindings/watchdog/samsung-wdt.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/dts/Bindings/watchdog/samsung-wdt.txt b/dts/Bindings/watchdog/samsung-wdt.txt new file mode 100644 index 0000000000..cfff37511a --- /dev/null +++ b/dts/Bindings/watchdog/samsung-wdt.txt @@ -0,0 +1,33 @@ +* 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 + (a) "samsung,s3c2410-wdt" for Exynos4 and previous SoCs + (b) "samsung,exynos5250-wdt" for Exynos5250 + (c) "samsung,exynos5420-wdt" for Exynos5420 + +- 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>; +}; |