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watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog

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WDT_MODE value need to be or-ed with MODE_KEY when setting
watchdog mode. Add it to mtk_wdt_stop function, so that the
watchdog can be stopped (e.g. during suspend).

Signed-off-by: Nicolas Boichat <[email protected]>
Acked-by: Matthias Brugger <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
Nicolas Boichat 2015-11-18 10:45:01 +08:00 • committed by Wim Van Sebroeck
commit 5da2bf1ac8
1 changed files with 1 additions and 0 deletions
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drivers/watchdog/mtk_wdt.c
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@ -123,6 +123,7 @@ static int mtk_wdt_stop(struct watchdog_device *wdt_dev)
reg = readl(wdt_base + WDT_MODE);
reg &= ~WDT_MODE_EN;
reg |= WDT_MODE_KEY;
iowrite32(reg, wdt_base + WDT_MODE);
return 0;