Hi! > * 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? Mainline seems to fail suspend, with CONFIG_DRM turned off. Aha, and same behaviour with CONFIG_DRM on. Why is it different today? [ 334.933532] Charging, 4350000 uV, 532000 uA [ 338.093109] PM: suspend entry (deep) [ 338.096710] PM: Syncing filesystems ... done. [ 338.138977] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 338.147338] OOM killer disabled. [ 338.150604] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 338.159240] Suspending console(s) (use no_console_suspend to debug) [ 338.168212] phy phy-usb-phy@1.1: phy poweroff failed --> -19 [ 338.181518] l4_wkup_cm:clk:0018:0: failed to disable [ 338.183227] PM: noirq suspend of devices failed [ 338.187377] g_ether gadget: reset config [ 338.187408] g_ether gadget: ecm deactivated [ 338.187408] usb0: gether_disconnect [ 338.513092] OOM killer enabled. [ 338.516296] Restarting tasks ... done. [ 338.529266] PM: suspend exit [ 338.698577] g_ether gadget: high-speed config #1: CDC Ethernet (ECM) [ 338.704986] g_ether gadget: init ecm [ 338.708587] g_ether gadget: notify connect true [ 338.713958] g_ether gadget: activate ecm [ 338.717895] usb0: qlen 10 [ 338.720550] g_ether gadget: ecm_open [ 338.724151] usb0: eth_start [ 338.727111] g_ether gadget: packet filter 0c [ 338.731414] g_ether gadget: ecm req21.43 v000c i0000 l0 [ 338.993835] cpcap_usb_detect: 27 callbacks suppressed With USB unplugged, suspend seems to behave as expected, even on v4.18-rc8, and it seems to work even with X running and modem online. Good. > 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. > > Then again system running idle is about the same with timers and > interrupts working so I'd just idle UARTs and unload USB modules :) Ok, let me play with it some more. Thanks for help, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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