On Tue, 7 Nov 2023 at 23:01, Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> wrote: > > > On 11/6/2023 5:55 PM, Dmitry Baryshkov wrote: > > On Sat, 7 Oct 2023 at 01:55, Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> wrote: > >> The purpose of this patch series is to incorporate pm runtime framework > >> into MSM eDP/DP driver so that eDP panel can be detected by DRM eDP panel > >> driver during system probe time. During incorporating procedure, original > >> customized pm realted fucntions, such as dp_pm_prepare(), dp_pm_suspend(), > >> dp_pm_resume() and dp_pm_prepare(), are removed and replaced with functions > >> provided by pm runtiem framework such as pm_runtime_force_suspend() and > >> pm_runtime_force_resume(). In addition, both eDP aux-bus and irq handler > >> are bound at system probe time too. > > > > With this patchset in place I can crash the board using the following > > sequence (SM8350-HDK): > > > > - plug the USBC DP dongle > > - run modetest at any mode, don't press Enter yet > > - unplug the dongle > > - press Enter to stop modetest > > > > => the board resets to Sahara. > > > > Please ping me if you need any additional information from my side. > > questiosn, > > 1) which dongle are you used? I have used several Dell and Hama USB-C dongles. > > 2) what code branch shoud I used to duplicate this problem. I have pushed my kernel tree to git.codelinaro.org/dmitry.baryshkov/linux.git, branch test-dp-rpm I had several UCSI patches on top, but they should not be relevant. > > I can not duplicate system crash problem at my setup kodiak (SM7325) > chrome book with my PM runtime patch series. > > my code base is Linux 6.6-rc2 + pm runtime patch series (7 patches) > > I did: > > 1) plugin either apple dongle (DP-to-HDMI) + 1080p display or DP typeC > cable directly to 1080p display > > 2) stop ui > > 3) /usr/bin/modetest -M msm -s 34:1920x1080 (see test pattern show at > display) > > 4) unplug apple dongle or DP typeC cable > > 5) hit enter key > > 6) start ui > > 7) display back to login page of chrome book > > -- With best wishes Dmitry
