On Jul 12, 2012, at 9:44 PM, Jiang Lu wrote: > On PPC44x core, the WRC(Watchdog-timer Reset Control) field of TCR > of timer can not reset by software after set to a non-zero value. > Which means software can not reset the timeout behaviour of watchdog timer. > > This patch selects WATCHDOG_NOWAYOUT option for 44x platforms to > indicate the watchdog timer can not be disabled once fired. > > Signed-off-by: Jiang Lu <lu.ji...@windriver.com> > --- > drivers/watchdog/Kconfig | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-)
I believe this is not 44x specific, but how Book-E watchdog is architected. > > diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig > index 3709624..41f3dff 100644 > --- a/drivers/watchdog/Kconfig > +++ b/drivers/watchdog/Kconfig > @@ -1084,6 +1084,7 @@ config PIKA_WDT > config BOOKE_WDT > tristate "PowerPC Book-E Watchdog Timer" > depends on BOOKE || 4xx > + select WATCHDOG_NOWAYOUT if 44x This should probably be 'select WATCHDOG_NOWAYOUT if BOOKE' > ---help--- > Watchdog driver for PowerPC Book-E chips, such as the Freescale > MPC85xx SOCs and the IBM PowerPC 440. > -- > 1.7.7 > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
