* Tomi Valkeinen <tomi.valkeinen@xxxxxx> [200519 15:55]: > (Dropping DT from cc) > > On 19/05/2020 18:48, Tony Lindgren wrote: > > > > > Suspend/resume on am43xx-gpevm is broken right now in mainline and the regression looks > > > > like it is caused by the display subsystem. I have reported this to Tomi and > > > > its being investigated. > > > > > > > > Meanwhile I have tested this patch with display configs disabled and Keerthy's > > > > suspend/resume tests pass on both am3 and am4. > > > > OK great thanks for checking it. Do you have the display subsystem > > related commit that broke PM? I'm wondering if my recent DSS platform > > data removal changes might have caused the regression. > > I spent a bit time looking at this, but unfortunately I wasn't even able to > resume my AM4 evm from suspend. I tried with rtcwake and with plain console > (with no_console_suspend). I did not have DSS loaded. My test-bbb-suspend script seems to have: sudo modprobe wkup_m3_ipc sudo modprobe pm33xx sudo modprobe rtc-omap rtcwake -m mem -s 5 I think the same should work for am437x. But some boards do not support deep sleep like am437x-idk. > Anyone have quick hints on how to debug why resume doesn't seem to happen? You might get some info with no_console_suspend, but that might also cause other issues. Regards, Tony
