On Sat, May 19, 2012 at 1:48 AM, Colin Cross <ccross@xxxxxxxxxxx> wrote: > On Fri, May 18, 2012 at 12:03 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >> On Friday, May 18, 2012, Santosh Shilimkar wrote: >>> On Tuesday 08 May 2012 06:27 AM, Colin Cross wrote: >>> > On some ARM SMP SoCs (OMAP4460, Tegra 2, and probably more), the >>> > cpus cannot be independently powered down, either due to >>> > sequencing restrictions (on Tegra 2, cpu 0 must be the last to >>> > power down), or due to HW bugs (on OMAP4460, a cpu powering up >>> > will corrupt the gic state unless the other cpu runs a work >>> > around). Each cpu has a power state that it can enter without >>> > coordinating with the other cpu (usually Wait For Interrupt, or >>> > WFI), and one or more "coupled" power states that affect blocks >>> > shared between the cpus (L2 cache, interrupt controller, and >>> > sometimes the whole SoC). Entering a coupled power state must >>> > be tightly controlled on both cpus. >>> > >>> >>> [...] >>> >>> > This series has been tested and reviewed by Santosh and Kevin >>> > for OMAP4, which has a cpuidle series ready for 3.5, and Tegra >>> > and Exynos5 patches are in progress. I think this is ready to >>> > go in. Lean, are you maintaining a cpuidle tree for linux-next? >>> > If not, I can publish a tree for linux-next, or this could go in >>> > through Arnd's tree. >>> >>> I haven't seen any response so far on who is lining up this >>> series for 3.5 ? Not sure if it made it to linux-next either. >> >> That should be Len, but he's been silent recently. >> >> How urgent is it? > > Len silently picked up the last version. I just posted two fixes to > it, hopefully he'll pick up those too. Great !! I will pull Len's tree and rebase OMAP patches against it. Regards Santosh _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
