[v5,05/12] drm/modes: Rewrite the command line parser

Thomas Graichen thomas.graichen at googlemail.com
Mon Aug 19 19:20:00 UTC 2019

On Mon, Aug 19, 2019 at 8:54 PM Jernej Škrabec <jernej.skrabec at gmail.com> wrote:
> +CC: Thomas Graichen
> Dne ponedeljek, 17. junij 2019 ob 16:51:32 CEST je Maxime Ripard napisal(a):
> > From: Maxime Ripard <maxime.ripard at free-electrons.com>
> >
> > Rewrite the command line parser in order to get away from the state machine
> > parsing the video mode lines.
> >
> > Hopefully, this will allow to extend it more easily to support named modes
> > and / or properties set directly on the command line.
> >
> > Reviewed-by: Noralf Trønnes <noralf at tronnes.org>
> > Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
> Thomas reported to me that this patch breaks "video=CONNECTOR:e" kernel
> parameter which he currently uses as a workaround for H6 HDMI monitor
> detection issue on one STB.
> I suppose this is the same issue that Dmitry noticed.
> Thomas Graichen (in CC) can provide more information if needed.
> Best regards,
> Jernej

as jernej already mentioned i am currently having to use the kernel
cmdline option video=HDMI-A-1:e to get a working hdmi output on an
eachlink h6 mini tv box and was wondering that i did not get any hdmi
output even with this option when switching from the
https://github.com/megous/linux oprange-pi-5.2 to the orange-pi-5.3
branch which seems to contain this patch. as i had no idea what might
have caused the breakage of the hdmi output and did a full bisect of
the kernel between those two versions, which ended reliably at exactly
this patch - so i guess there is a regression at least with the
video=CONNECTOR:e option (maybe others too?) with this patches code
which makes it not working anymore.

best wishes - thomas

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