Messages in this thread | | | Date | Tue, 17 Feb 2009 14:19:24 +0000 | From | Matthew Garrett <> | Subject | Re: [RFD] Automatic suspend |
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On Tue, Feb 17, 2009 at 06:14:34AM -0800, Brian Swetland wrote: > [Matthew Garrett <mjg59@srcf.ucam.org>] > > https://lists.linux-foundation.org/pipermail/linux-pm/2009-January/019493.html > > says that they're the same on their current platform. > > Well on the Qualcomm MSM72xx SoCs, yeah they're pretty similar -- we can > reasonably enter power collapse (full shutdown of the ARM11 and > peripherals) from idle. But this is not (to my knowledge) true of *all* > SoCs out there. Also, resuming from this state can take 5-30ms > (depending on how distracted the baseband processor is by what's going > on on the network).
Mm. Resume from deep idle on x86 is typically in the usec range, but this is the kind of constraint that pm_qos exposes nicely.
-- Matthew Garrett | mjg59@srcf.ucam.org
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