Re: [PATCH 2/2] Revert "drm: of: Lookup if child node has panel or bridge"

[Bjorn Andersson]

On Wed, Apr 27, 2022 at 2:34 AM Paul Kocialkowski
<paul.kocialkowski@xxxxxxxxxxx> wrote:
>
> Hi Bjorn,
>
> On Tue 26 Apr 22, 14:10, Bjorn Andersson wrote:
> > On Tue 26 Apr 06:50 PDT 2022, Paul Kocialkowski wrote:
[..]
> > > Bjorn, what do you think?
> > >
> >
> > I'm okay with the idea that it's up the driver to check that the output
> > port references an usb-c-connector - either before the call or upon
> > drm_of_find_panel_or_bridge() returning an error.
>
> Actually I'm starting to think might be wrong on this one: there's a
> display-connector bridge driver that should register a bridge, so
> drm_of_find_panel_or_bridge should work. Did you have that driver enabled?
>

I don't have this driver enabled, but that seems like it would solve
the problem when the remote node is a dp-connector.

Unfortunately in my particular case, I have a usb-c-connector. So I
don't see that I would be able to reuse this straight off.
But I assume that this is trying to say that the USB Type-C code is
supposed to provide a bridge for each of the connectors exposed by my
USB Type-C controller?

I've been building on top of drm_connector_oob_hotplug_event() to
achieve this (with the link in the other direction)...

Regards,
Bjorn