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| author | Leela Krishna Amudala <l.krishna@samsung.com> | 2013-12-06 09:47:47 +0400 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2014-01-29 00:24:15 +0400 |
| commit | 4f1f653a68d67ca5732fdd7ee4deb290a3ea5149 (patch) | |
| tree | 493c871579b06084d9eaf0c2ef19495d1ae3ec85 /Documentation/devicetree/bindings/watchdog/samsung-wdt.txt | |
| parent | 178624403c04a4af315583eaf75ebb8545474544 (diff) | |
| download | linux-4f1f653a68d67ca5732fdd7ee4deb290a3ea5149.tar.xz | |
watchdog: s3c2410_wdt: use syscon regmap interface to configure pmu register
Add device tree support for exynos5250 and 5420 SoCs and use syscon regmap interface
to configure AUTOMATIC_WDT_RESET_DISABLE and MASK_WDT_RESET_REQUEST registers of PMU
to mask/unmask enable/disable of watchdog in probe and s2r scenarios.
Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'Documentation/devicetree/bindings/watchdog/samsung-wdt.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/samsung-wdt.txt | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt b/Documentation/devicetree/bindings/watchdog/samsung-wdt.txt index 2aa486cc1ff6..cfff37511aac 100644 --- 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>; +}; |