Hi Paul, On 09/20/2012 12:14 PM, Paul Walmsley wrote: > Hi > > On Mon, 10 Sep 2012, Jon Hunter wrote: > >> When CPU-idle is enabled, the MPU sub-system will transition to low power >> states during idle periods. If the PMU is active and the MPU sub-system >> transitions to a low power state, such as retention, then the PMU context >> will be lost and PMU events will stop. To prevent this from happening add a >> QoS constraint whenever PMU is active to prevent the MPU sub-system from >> transitioning to a low power state. >> >> By default the PMU QoS constraint is set to -1 so it will not prevent any low >> power states and when the PMU is enabled, it is set to 0, so that only C-state >> C0 is allowed. I plan to re-visit this and relax the constraint to allow some >> low power states, but for now I just wish to ensure PMU is working. >> >> Cc: Ming Lei <ming.lei@xxxxxxxxxxxxx> >> Cc: Will Deacon <will.deacon@xxxxxxx> >> Cc: Benoit Cousson <b-cousson@xxxxxx> >> Cc: Paul Walmsley <paul@xxxxxxxxx> >> Cc: Kevin Hilman <khilman@xxxxxx> >> >> Signed-off-by: Jon Hunter <jon-hunter@xxxxxx> > > This one looks like 3.7-rc material, due to the dependency on Will's PMU > runtime PM adaptation series, which is unfortunately not yet in the > stable merge base that I need to use to send these upstream. Jon, care to > update and re-send this one after Linus merges the other PMU patches? Yes no problem. Will send out during the 3.7-rc. Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
