* powerpc power management @ 2006-09-08 2:05 John Rigby 2006-09-08 7:55 ` Vaidyanathan S 0 siblings, 1 reply; 6+ messages in thread From: John Rigby @ 2006-09-08 2:05 UTC (permalink / raw) To: linuxppc I need to implement suspend to ram (sleep mode) on an embedded powerpc processor. I have googled generally and searched the lkml, this list and the linux power management mailing list. It seems after all this searching that the only existing code is for the powermac in drivers/macintosh/(variousfiles) and arch/powerpc/platforms/powermac/(variousfiles). Is this true or am I missing something? Thanks John ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: powerpc power management 2006-09-08 2:05 powerpc power management John Rigby @ 2006-09-08 7:55 ` Vaidyanathan S 2006-09-08 14:18 ` John Rigby 0 siblings, 1 reply; 6+ messages in thread From: Vaidyanathan S @ 2006-09-08 7:55 UTC (permalink / raw) To: John Rigby; +Cc: linuxppc Hi John, John Rigby wrote: > I need to implement suspend to ram (sleep mode) on an embedded powerpc > processor. I have googled generally and searched the lkml, this list > and the linux power management mailing list. It seems after all this > searching that the only existing code is for the powermac in > drivers/macintosh/(variousfiles) and > arch/powerpc/platforms/powermac/(variousfiles). Is this true or am I > missing something? > Powermac code related to apple platforms seems to be the only supported platform for pwr mgt under Linux. What ppc platforms are you looking at? > Thanks > John -- Vaidy ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: powerpc power management 2006-09-08 7:55 ` Vaidyanathan S @ 2006-09-08 14:18 ` John Rigby 2006-09-08 20:16 ` Guennadi Liakhovetski 2006-09-09 1:44 ` Paul Mackerras 0 siblings, 2 replies; 6+ messages in thread From: John Rigby @ 2006-09-08 14:18 UTC (permalink / raw) To: Vaidyanathan S; +Cc: linuxppc MPC5200 which has a 603 core. On 9/8/06, Vaidyanathan S <svaidy@in.ibm.com> wrote: > Hi John, > > John Rigby wrote: > > I need to implement suspend to ram (sleep mode) on an embedded powerpc > > processor. I have googled generally and searched the lkml, this list > > and the linux power management mailing list. It seems after all this > > searching that the only existing code is for the powermac in > > drivers/macintosh/(variousfiles) and > > arch/powerpc/platforms/powermac/(variousfiles). Is this true or am I > > missing something? > > > > Powermac code related to apple platforms seems to be the only > supported platform for pwr mgt under Linux. > > What ppc platforms are you looking at? > > > Thanks > > John > > -- Vaidy > > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: powerpc power management 2006-09-08 14:18 ` John Rigby @ 2006-09-08 20:16 ` Guennadi Liakhovetski 2006-09-09 1:44 ` Paul Mackerras 1 sibling, 0 replies; 6+ messages in thread From: Guennadi Liakhovetski @ 2006-09-08 20:16 UTC (permalink / raw) To: John Rigby; +Cc: linuxppc Hi John On Fri, 8 Sep 2006, John Rigby wrote: > MPC5200 which has a 603 core. > > On 9/8/06, Vaidyanathan S <svaidy@in.ibm.com> wrote: > > Hi John, > > > > John Rigby wrote: > > > I need to implement suspend to ram (sleep mode) on an embedded powerpc > > > processor. I have googled generally and searched the lkml, this list > > > and the linux power management mailing list. It seems after all this > > > searching that the only existing code is for the powermac in > > > drivers/macintosh/(variousfiles) and > > > arch/powerpc/platforms/powermac/(variousfiles). Is this true or am I > > > missing something? I've been also playing with these ideas for a few weeks now, but before I can start with that I have to port my board from arch/ppc to arch/powerpc, which also means fdt support, new booting code, etc. But if I manage that, I hope I'll get back to those ideas - if somebody doesn't do it before me, which, actually, would be quite nice:-) Is your board already using ARCH=powerpc or ARCH=ppc? If the latter, I am afraid, you'd need to port it under powerpc first. Don't think it makes much sense doing new developments under arch/ppc now. As far as I understand, power-management code is also in flux, so, that won't be easy either... If you do start working on str, I'll try to be useful at least with testing:-) Thanks Guennadi --- Guennadi Liakhovetski ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: powerpc power management 2006-09-08 14:18 ` John Rigby 2006-09-08 20:16 ` Guennadi Liakhovetski @ 2006-09-09 1:44 ` Paul Mackerras 2006-09-09 4:31 ` John Rigby 1 sibling, 1 reply; 6+ messages in thread From: Paul Mackerras @ 2006-09-09 1:44 UTC (permalink / raw) To: John Rigby; +Cc: linuxppc John Rigby writes: > MPC5200 which has a 603 core. What support does the rest of the system provide for suspend/resume? Generally the issue is not with getting the processor into sleep mode, it's how you poke the rest of the system to put the RAM into self-refresh mode, power down external buses, etc. That stuff tends to be very platform-specific. Paul. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: powerpc power management 2006-09-09 1:44 ` Paul Mackerras @ 2006-09-09 4:31 ` John Rigby 0 siblings, 0 replies; 6+ messages in thread From: John Rigby @ 2006-09-09 4:31 UTC (permalink / raw) To: Paul Mackerras; +Cc: linuxppc > Generally the issue is not with getting the processor into sleep mode, > it's how you poke the rest of the system to put the RAM into > self-refresh mode, power down external buses, etc. That stuff tends > to be very platform-specific. Yes you are right, I was asking about the cpu core not all the external devices. I realize that the majority of the code is in the rest of the system. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-09-09 4:31 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2006-09-08 2:05 powerpc power management John Rigby 2006-09-08 7:55 ` Vaidyanathan S 2006-09-08 14:18 ` John Rigby 2006-09-08 20:16 ` Guennadi Liakhovetski 2006-09-09 1:44 ` Paul Mackerras 2006-09-09 4:31 ` John Rigby
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