On Thursday 21 April 2016 23:28:08 Pavel Machek wrote: > Hi! > > > > CONFIG_HSI breaks power management completely, so power management > > > with modem will be another topic. > > > > Sebastian, any idea why power management does not work for HSI? > > > > > > > > In the meantime, I found what is causing the rention mode to break for > > > > > > me: CONFIG_HSI (aka wireless modem support). With HSI off, it seems to work. > > > > > > > > > > > > I still get problems with the camera button, in config similar to > > > > > > defconfig. For some reason, I'm even getting (autorepeating) ^@ on > > > > > > console. As long as I hold camera button down, I even get it into off > > > > > > mode for brief period. > > > > > > > > > > Ok, if I turn off CONFIG_KEYBOARD_GPIO, I get it into off > > > > > mode... once per screen blank, for about a second. (Does CONFIG_KEYBOARD_GPIO also cause > > > > > problems for you?) > > > > > > > > > > Any idea why it enters off mode only once after each screenblank? > > > > > > > > After disabling CONFIG_PROVE_LOCKING, loading the LCD modules, and > > > > blanking the screen, my n900 hits off mode just fine about once > > > > a second. Sounds like you still have some extra devices enabled > > > > causing it. > > > > > > I checked again... also with vanilla 4.6-rc2 to double check... same effect. > > > > > > Aha, got it... cat-ing /sys/kernel/debug/pm_debug/count breaks the > > > off mode. If I don't do that (tm), it seems to work way better. > > > > So what is result? Is power management working for CONFIG_KEYBOARD_GPIO? > > camera and unlock button GPIOs seem to break the powermanagement, > too. I disabled it for now. So this sounds like a problem in gpio keyboard driver. Maybe you can ping maintainers of that driver? > Next hint I got from Sebastian was that I may need to enable power > management in /sys. > > pavel@n900:/my/tui/ofone$ cat > /sys/devices/platform/68000000.ocp/48058000.ssi-controller/power/runtime_status > active > pavel@n900:/my/tui/ofone$ cat > /sys/devices/platform/68000000.ocp/48058000.ssi-controller/power/autosuspend_delay_ms > cat: > /sys/devices/platform/68000000.ocp/48058000.ssi-controller/power/autosuspend_delay_ms: > Input/output error > root@n900:/my/tui/ofone# cat > /sys/devices/platform/68000000.ocp/48058000.ssi-controller/power/control > auto > > I could not get it to sleep :-(. > > Best regards, > Pavel > Maybe down phonet0 interface and other hsi/ssi interfaces? -- Pali Rohár pali.rohar@xxxxxxxxx -- 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
