watchdog: gpio_wdt: Add "always_running" feature to GPIO watchdog

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On some chips, like the TPS386000, the trigger cannot be disabled
and the CPU must keep toggling the line at all times. Add a switch
"always_running" to keep toggling the GPIO line regardless of the
state of the soft part of the watchdog. The "armed" member keeps
track of whether a timeout must also cause a reset.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

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Mike Looijmans 2015-01-14 07:28:29 +01:00 • committed by Wim Van Sebroeck

parent 396f163ceb

commit ba804a9510

2 changed files with 34 additions and 8 deletions

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5

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

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37

drivers/watchdog/gpio_wdt.c

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