[PATCH] OMAP2PLUS: WDT: Fix: Disable WDT after reset during init

[Varadarajan, Charulatha]

Tony, Benoit, Kevin,

> > >> > >
> > >> > > I think that disabling it should be done only if the
> > CONFIG_OMAP_WDT
> > >> > > is not set.
> > >> >
> > >> > How about disabling is done always unless CONFIG_WATCHDOG_NOWAYOUT
> > >> > is set?
> > >>
> > >> As given in the patch description, this patch does a disable of
> > watchdog
> > >> timer, during init, to avoid the system rebooting that happens due to
> > >> enabling of watchdog timer after a reset of the module (during hwmod
> > init).
> > >>
> > >> According to the default WDT registers values, the system reboot
> would
> > >> happen in ~10s if watchdog is enabled with default values. Hence,
> after
> > >> a WDT module reset during init, the watchdog has to be disabled
> within
> > 10s
> > >> otherwise the system will keep rebooting.
> > >>
> > >> Hence irrespective of CONFIG_WATCHDOG_NOWAYOUT/ CONFIG_OMAP_WDT,
> > >> the watchdog timer needs to be disabled after a WDT reset has
> happened.
> > >>
> > > One more option is to avoid the software reset using the
> CONFIG_OMAP_WDT
> > > flag. Something like below.
> >
> > This was already proposed by Charu, and rejected.
> >
> > Doing this means we have a dependency on particular bootloader init, and
> > we'd like to get rid of *all* assumptions about what the bootloader does
> > (or does not do.)
> >
> you mean is not depeding on bootloader to disable WDT. Make sense.
> 

Let me know your opinion on how to handle this issue.

- V Charulatha