Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 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 - "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 23 Optional properties: 24 - timeout-sec : contains the watchdog timeout in seconds. 25 26 Example: 27 28 watchdog@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 };