[Nouveau] [PATCH v3 5/7] drm/nouveau: utilize subconnector property for DP

Ilia Mirkin imirkin at alum.mit.edu
Wed Aug 28 14:47:08 UTC 2019

On Wed, Aug 28, 2019 at 10:38 AM Ville Syrjälä
<ville.syrjala at linux.intel.com> wrote:
> On Mon, Aug 26, 2019 at 09:36:50AM -0400, Ilia Mirkin wrote:
> > This should probably be fixed to account for the scenario where an
> > HDMI connector is plugged directly into the DP++ port. I don't think
> > the dp.subconnector property will be valid in that case.
> > (Unfortunately I don't remember how one detects that particular
> > situation.)
> One may or may not be able to detect it very well. I've seen dongles
> that automagically change the DFP type from DP++ to DP/HDMI depending
> on what's plugged in, and I've also seen dongles that leave the DFP
> type to DP++.

Well, our internal logic certainly knows if it's driving DP or TMDS. I
just don't remember how it knows this.


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