Re: fw_devlink breakage on SDM845 / a630 with DSI displays

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+ some more folks and msm list..

I suppose I didn't hit this because CONFIG_FBDEV_EMULATION is not
normally enabled for CrOS.. but I'm not really to familiar with
fw_devlink

BR,
-R

On Wed, May 19, 2021 at 8:26 AM Caleb Connolly <caleb@xxxxxxxxxxxxx> wrote:
>
>
> Hi,
>
> Since -rc1 I've been hit by some DRM breakage in freedreno which happens
> when fw_devlink=on. It seems to cause some clocks (rcg) to get stuck and
> break DSI displays, here's a full log from the OnePlus 6:
> https://paste.ubuntu.com/p/8kPx4nFGF5/ (that is with
> "deferred_probe_timeout") The PocoPhone F1 also seems to be affected by
> this.
>
> The display will still come up after pressing the power button a few
> times, although it will be incredibly slow.
>
> It's worth noting that the issue only happens with
> CONFIG_FBDEV_EMULATION is enabled, I've previously required this to see
> kernel logs during boot and general boot splash with postmarketOS.
> Without it the display will be stuck on the bootloader splash until I
> press the power button and cause it to update once UI (like Phosh) has
> started (though this has been the case for quite some time).
>
> I'd appreciate any help with debugging / resolving this issue, I'm
> afraid I haven't been able to determine much from some brief digging.
>
>
> --
> Kind Regards,
> Caleb
>



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