Messages in this thread | | | Date | Tue, 17 Feb 2009 06:14:34 -0800 | From | Brian Swetland <> | Subject | Re: [RFD] Automatic suspend |
| |
[Matthew Garrett <mjg59@srcf.ucam.org>] > On Tue, Feb 17, 2009 at 12:22:59AM +0100, Pavel Machek wrote: > > On Mon 2009-02-16 23:13:24, Matthew Garrett wrote: > > > Meanwhile, on embedded it's becoming a less interesting problem because > > > idle and suspended are often now equivalent states. > > > > Android people tell us otherwise. > > 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).
Brian
| |