On 2 September 2011 08:05, Jarkko Nikula <jarkko.nikula@xxxxxxxxxx> wrote: > Other usual things to check that display is off (echo 1 > > /sys/class/graphics/fb0/blank) and no cable to musb/otg port. > > Haven't tried myself with recent kernel but does EHCI and hub on XM let to > idle cpu at all? At least on one board having on-board hub I had to disable > or unload ehci module in order to hit the retention. > I've checked that too and I've even disabled USB support in the kernel just to be sure. But still nothing: root@beagleboard:~# powertop -d -t 100 PowerTOP 1.12 (C) 2007, 2008 Intel Corporation Collecting data for 100 seconds Cn Avg residency C0 (cpu running) ( 0.0%) C0 58.5ms (100.0%) C1 0.0ms ( 0.0%) C2 0.0ms ( 0.0%) C3 0.0ms ( 0.0%) C4 0.0ms ( 0.0%) C5 0.0ms ( 0.0%) C6 0.0ms ( 0.0%) Even when CPU has been idle 100% of the time it doesn't hit any state deeper than C0. -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com -- 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
