source: src/linux/universal/linux-4.9/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt @ 31859

Last change on this file since 31859 was 31859, checked in by brainslayer, 6 weeks ago

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1* Samsung's Watchdog Timer Controller
2
3The Samsung's Watchdog controller is used for resuming system operation
4after a preset amount of time during which the WDT reset event has not
5occurred.
6
7Required properties:
8- compatible : should be one among the following
9        - "samsung,s3c2410-wdt" for S3C2410
10        - "samsung,s3c6410-wdt" for S3C6410, S5PV210 and Exynos4
11        - "samsung,exynos5250-wdt" for Exynos5250
12        - "samsung,exynos5420-wdt" for Exynos5420
13        - "samsung,exynos7-wdt" for Exynos7
14
15- reg : base physical address of the controller and length of memory mapped
16        region.
17- interrupts : interrupt number to the cpu.
18- samsung,syscon-phandle : reference to syscon node (This property required only
19        in case of compatible being "samsung,exynos5250-wdt" or "samsung,exynos5420-wdt".
20        In case of Exynos5250 and 5420 this property points to syscon node holding the PMU
21        base address)
22
23Optional properties:
24- timeout-sec : contains the watchdog timeout in seconds.
25
26Example:
27
28watchdog@101D0000 {
29        compatible = "samsung,exynos5250-wdt";
30        reg = <0x101D0000 0x100>;
31        interrupts = <0 42 0>;
32        clocks = <&clock 336>;
33        clock-names = "watchdog";
34        samsung,syscon-phandle = <&pmu_syscon>;
35};
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