Messages in this thread | | | Date | Tue, 23 Sep 2008 11:39:29 +0100 | From | Alan Cox <> | Subject | Re: How to kick a secondary watchdog? (Re: [PATCH 1/3] watchdog: sync linux-omap changes) |
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> Some omap devices like Nokia 770, N800 and N810 have also a secondary > watchdog on the retu chip connected via cbus. This watchdog needs > to be kicked as it cannot be disabled.
If you have a chip that runs continually then the easiest approach I've seen is to have kernel code that manages it and the watchdog driver just keeps a time value indicating whether it should be refreshed.
We've got a few watchdogs like that in the watchdog tree.
If it can be user started but then not stopped that is fine - the API doesn't require you can stop it
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