[PATCH v2] soc: mediatek: Add deprecated compatible to mmsys

[Chen-Yu Tsai]

On Fri, Dec 16, 2022 at 9:35 PM Matthias Brugger <matthias.bgg at gmail.com> wrote:
>
>
>
> On 01/12/2022 12:25, Chen-Yu Tsai wrote:
> > On Thu, Dec 1, 2022 at 7:20 PM Chen-Yu Tsai <wenst at chromium.org> wrote:
> >>
> >> On Mon, Nov 14, 2022 at 7:59 PM AngeloGioacchino Del Regno
> >> <angelogioacchino.delregno at collabora.com> wrote:
> >>>
> >>> Il 11/11/22 09:29, matthias.bgg at kernel.org ha scritto:
> >>>> From: Matthias Brugger <matthias.bgg at gmail.com>
> >>>>
> >>>> For backward compatibility we add the deprecated compatible.
> >>>>
> >>>> Signed-off-by: Matthias Brugger <matthias.bgg at gmail.com>
> >>>
> >>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> >>>
> >>> ...And tested on MT8195 Cherry Chromebook.
> >>
> >> This now seems like a bad idea. In the dtsi we have two nodes (vdosys0 and
> >> vdosys1) that both currently use the -mmsys compatible, which in the driver
> >> maps to vdosys0. So not only do we have vdosys1 incorrectly probing as
> >> vdosys0, we also have duplicate clks being registered and duplicate DRM
> >> pipelines. On my device vdosys1 ends up winning the duplicate clock race.
> >>
> >> I suggest just reverting this. The display stuff won't be useful unless
> >> the drivers are able to distinguish themselves from one another.
> >
> > That and try to fix the vdosys0 node ASAP.
>
> I'm not sure what you mean? If there are any patches that are in my queue that
> needs attention, please let me know.

It was more of a P.S. note.