linux-kernel - Re: [PATCH v7 09/11] drm/mediatek: dp: Add support for embedded DisplayPort aux-bus

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Message-ID: <CAGXv+5H_L+Zg66+nTaVGQ=yqcazMtKqG54eURtcjgA=q0VK2Eg@mail.gmail.com>
Date:   Fri, 1 Sep 2023 23:00:45 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Michael Walle <mwalle@...nel.org>
Cc:     Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>, angelogioacchino.delregno@...labora.com,
        airlied@...il.com, amergnat@...libre.com, chunkuang.hu@...nel.org,
        ck.hu@...iatek.com, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org, ehristev@...labora.com,
        kernel@...labora.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        matthias.bgg@...il.com, p.zabel@...gutronix.de
Subject: Re: [PATCH v7 09/11] drm/mediatek: dp: Add support for embedded
 DisplayPort aux-bus

On Fri, Sep 1, 2023 at 6:00 PM Michael Walle <mwalle@...nel.org> wrote:
>
> Hi,
>
> >> I was just curious if you know of any development for that (or
> >> similar)
> >> in the kernel.
> >
> > This is probably because support for this SoC began with Chromebooks,
> > which have fixed and defined uses for the pipelines. I suspect that
> > what you are working on is much more flexible.
>
> Yes. that is correct.
>
> > The driver should be made to allow dynamic selection of outputs, as
> > is commonly seen with other drivers, but I don't know if that's on
> > anyone's TODO list.
>
> Do you have any pointers where to look at?

There's a series [1] called "Add connector dynamic selection capability".
Not sure if it does what you want though. I haven't looked into it.

ChenYu

[1] https://lore.kernel.org/all/20230809181525.7561-1-jason-jh.lin@mediatek.com/