On Wed 2018-08-08 02:05:12, Tony Lindgren wrote: > * Pavel Machek <pavel@xxxxxx> [180727 11:35]: > > Hi! > > > > > high even before modem (and thus USB) is enabled. > > > > > > > > > > Interestingly, CyanogenMod and Jolla seem to have higher power > > > > > consumption than stock operating system. > > > > > > > > > > (My Linux can survive for 10 hours, stock system could survive for 4 > > > > > days if I'm not mistaken). > > > > > > > > > > I thought I would experiment with suspend to RAM.. and it indeed > > > > > seemed to suspend ok, but I could not wake it up. Do I need to set up > > > > > wakeup with button somehow? Is suspend to RAM required for good power > > > > > consumption? > > > > > > > > Sorry but pm subsystem has debug mode that you can test in a easy way. > > > > You can even wakeup by any rtc alarm easily. > > > > > > Yes, that is how it works on PC (but there power button works, > > > too). Is it expected to work on Droid in v4.18? > > > > I tried setting up wakeup using RTC, but no, it does not seem to work: > > > > root@devuan:/my/tui/d4# rtcwake -m no -s 5 > > rtcwake: wakeup using /dev/rtc0 at Fri Jul 27 11:28:44 2018 > > root@devuan:/my/tui/d4# echo mem > /sys/power/state > > Works for me here as tested on next-20180808, maybe you don't have > CONFIG_RTC_DRV_CPCAP? Maybe you are trying to use >CONFIG_RTC_DRV_OMAP? I tried with mainline... there will be no graphics in next, right? And yes, I had CONFIG_RTC_DRV_CPCAP and not CONFIG_RTC_DRV_OMAP. > Then for deeper idle modes, you need to also idle UARTs, and unbind or > unload USB related modules. You should get to something like 160mW > power consumption with mdm6600 enabled and SoC suspended that way. That's slightly interesting. echo mem > /sys/power/state should do all the work, right? Disable UARTs etc. Plus, is 160mW still a bit high? > Then again system running idle is about the same with timers and > interrupts working so I'd just idle UARTs and unload USB modules :) > > My UART idle script below for reference. Thanks, let me try... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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