[Nouveau] [PATCH v3 5/7] drm/nouveau: utilize subconnector property for DP
ville.syrjala at linux.intel.com
Wed Aug 28 14:54:04 UTC 2019
On Wed, Aug 28, 2019 at 10:47:08AM -0400, Ilia Mirkin wrote:
> 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.
You'll be driving DP in this case. The DFP will be the one driving
DP or TMDS depending on what's plugged in.
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