Re: [REGRESSION] mt8183-kukui: dts: changes in dts caused display to no longer initialize - Was: Re: mt8183-kukui: drm/mediatek: dts: Invalid display hw pipeline when probing mediatek-drm

[Denis Gessert]

Thanks for the quick response. I compiled 6.18.9 with this patch
(without reverting the previous commit) and it boots successfully.

Cheers,
Denis

Am Fr., 6. Feb. 2026 um 15:55 Uhr schrieb Thorsten Leemhuis
<regressions@xxxxxxxxxxxxx>:
>
> On 2/6/26 12:33, Denis Gessert wrote:
> >
> > I found this email chain while troubleshooting why my Levovo Duet
> > (with the MT8183 chip) would not boot using any 6.18.* kernel.
> >
> > I can confirm that on my device the current stable 6.18.8 does not
> > boot unless I revert the commit
> >
> > commit e72d63fa0563f8a6e98c10fed3a9ce74dc0536e6 (HEAD)
> > Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> > Date:   Thu Jul 24 10:39:08 2025 +0200
> >
> >     arm64: dts: mediatek: mt8183: Migrate to display controller OF graph
> >
> > mentioned below. With the reverted commit the device boots as intended.
>
> There is a fix for it from Otto here that I guess should help
> https://lore.kernel.org/lkml/20260106-mt8183-display-graph-v2-1-e7e56054eef5@xxxxxxxxx/
>
> Side note: lacks a stable tag and maybe should have been merged this
> cycle instead of the next. But given that 6.19 is immanent it might be
> good if this could be backported to 6.19.y once it landed in mainline.
>
> > PS: Apologies for the potential double-mail.
> No worries, happens.
>
> Ciao, Thortsten