On Fri, Jun 10, 2016 at 10:29:17PM +0300, Sergei Shtylyov wrote: > On 06/10/2016 04:02 AM, Simon Horman wrote: > > >>[...] > >> > >>>>>And that the system behaves sanely on suspend/resume. > >>>> > >>>> I'd be thankful if you told me how to test that. :-) > >>> > >>>System suspend: > >>> > >>> echo mem > /sys/power/state > >> > >> Oh. I know that one! :-) > >> > >>>System resume: You're gonna need a "wakeup-source" in your DTS, e.g. gpio-keys. > >>>Serial should work too, echo "enabled" to the corresponding wakeup > >>>file in /sys first. > >> > >> I'm afraid I couldn't find that file. All I saw were RPM controls... > >> > >>>In case of issues, try "echo 0 > /sys/module/printk/parameters/console_suspend". > >> > >> There's no problems suspending, it's the resuming that's a problem for me. > >> > >>>Good luck! > >> > >> As usual, there was no luck. :-) > >> > >>WBR, Sergei > > > >Does resume work for UP (i.e. without SMP)? > > No. My problem with resume is I can't wake up the remote system. I don't > see the needed 'wakeup' file in > /sys/devices/platform/soc/e6e60000.serial/... > However, if I enable CONFIG_PM_[ADVANCED_]DEBUG and do > > $ echo -n core /sys/.power/pm_test > > the system happily wakes up after a small delay (5 s), w/either SMP or UP kernel. That seems promising but it seems curious that there is no wakeup file. On Lager the following procedure works for me using renesas-devel-20160613-v4.7-rc3 and shmobile defconfig. 0. Add wakeup-source property to serial@e6ce0000 node in DT 1. echo enabled > /sys/devices/platform/e6e60000.serial/tty/ttySC0/power/wakeup 2. echo mem > /sys/power/state 3. Provide input on serial console * Success! * > >How did testing CPU hotplug go? Did it work for all CPUs? > > Sure! Great! > The only problem I'm seeing (again) is the RCAN clock failing to register: > > rcar_gen2_cpg_clocks_init: failed to register cpg_clocks rcan clock (-12) > > I was going to look at it yesterday but (wrongly) thought it somehow > cured itself... I'll look at it now. Is this resolved? If not perhaps you could consider removing the node in question for now.
