[Freedreno] [PATCH v6 1/5] dt-bindings: msm/dp: add bindings of DP/DP-PLL driver for Snapdragon

[Stephen Boyd]

Quoting Rob Herring (2020-06-17 08:38:20)
> On Tue, Jun 16, 2020 at 5:15 AM Stephen Boyd <swboyd at chromium.org> wrote:
> >
> > Quoting Tanmay Shah (2020-06-11 18:50:26)
> > > diff --git a/Documentation/devicetree/bindings/display/msm/dp-sc7180.yaml b/Documentation/devicetree/bindings/display/msm/dp-sc7180.yaml
> > > new file mode 100644
> > > index 000000000000..5fdb9153df00
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/display/msm/dp-sc7180.yaml
> > > @@ -0,0 +1,142 @@
> > > +        data-lanes = <0 1>;
> > > +
> > > +        ports {
> > > +            #address-cells = <1>;
> > > +            #size-cells = <0>;
> > > +
> > > +            port at 0 {
> > > +                reg = <0>;
> > > +                dp_in: endpoint {
> > > +                    remote-endpoint = <&dpu_intf0_out>;
> > > +                };
> > > +            };
> > > +
> > > +            port at 1 {
> > > +                reg = <1>;
> > > +                dp_out: endpoint {
> >
> > Just curious what is eventually connected here? This is possibly a
> > question for Rob Herring, but I can't figure out how we're supposed to
> > connect this to the USB type-c connector that is receiving the DP
> > signal. Does the type-c connector binding support connecting to this end
> > of the graph? Or should this connect to the DP phy and then the phy
> > connects to the USB type-c connector node? Right now it is empty which
> > seems wrong.
> 
> It should connect to the Type-C connector perhaps thru some sort of
> switching/muxing node, but that's not really flushed out though. See
> 'dt-bindings: chrome: Add cros-ec-typec mux props' discussion with
> your CrOS colleagues.
> 

Ok. I see that we have an sbu endpoint for an aux channel but not a DP
endpoint in the type-c connector. I guess it's an alternate mode of the
connector too so maybe that complicates things. I'll talk to pmalani.
Thanks.