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Documentation / devicetree / bindings / watchdog / samsung-wdt.txt




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Based on kernel version 3.19. Page generated on 2015-02-13 21:19 EST.

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