Merge remote-tracking branch 'watchdog/master'

[karo-tx-linux.git] / Documentation / devicetree / bindings / watchdog / samsung-wdt.txt

diff --git a/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
index 2aa486cc1ff6a17ba8f1d95b75800a76941d2f5f..cfff37511aac0e3e1f3d42f6e9805c087a8bc286 100644 (file)
--- a/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
@@ -5,10 +5,29 @@ after a preset amount of time during which the WDT reset event has not
 occurred.
 
 Required properties:
-- compatible : should be "samsung,s3c2410-wdt"
+- 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>;
+};