[Bug 209401] New: arm64: display locks on rk3399 gru-kevin chromebook

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=209401

            Bug ID: 209401
           Summary: arm64: display locks on rk3399 gru-kevin chromebook
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.4 and up
          Hardware: ARM
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: mps at arvanta.net
        Regression: No

on arm64 rockchip rk3399 chromebook gru-kevin display locks at random time,
sometimes few times on the day (2-3 times) but on some days it can happen 10
and more times. suspend2ram and resume unlock display and it works until next
random lock.

This behavior started on linux kernel version 5.4 and up. On 5.3 and lower
kernels this doesn't happen (at least I didn't noticed it anytime)

I'm attaching part from dmesg output which shows errors when the display locks
and goes blank (dark).

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