82xx CPU features
Vitaly Bordug
vbordug at ru.mvista.com
Wed Jan 31 15:55:13 EST 2007
On Tue, 30 Jan 2007 16:35:03 -0600
Kumar Gala wrote:
>
> On Jan 30, 2007, at 4:31 PM, Guennadi Liakhovetski wrote:
>
> > On Fri, 26 Jan 2007, Kumar Gala wrote:
> >
> >> For _CAN_NAP, I'm guessing its historic, maybe Dan knows why it
> >> wasn't set.
> >> What happens if you try to set it? Are there implications at the
> >> system level
> >> with regards to _CAN_NAP?
> >
> > Just tested: set CPU_FTR_MAYBE_CAN_DOZE for 82xx,
> > CONFIG_BDI_SWITCH is not
> > defined, echoed 1 to /proc/sys/kernel/powersave-nap - and a 8241
> > still runs... I'll try to measure if there's any difference in power
> > consumption:-))
> >
> >> I'm looking at the CPU_FTR_PPC_LE it varies if we should use
> >> _PPC_LE vs
> >> _TRUE_LE (or whatever the other one is called).
>
> It would be good for someone to test an 8260 class (826x, 8272,
> etc..) to see if they have any issues.
I can see with 8272 if that makes any difference.
--
Thanks, Vitaly
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