On Tue, 29 Nov 2016 22:10:01 +0200
Laurent Pinchart <laurent.pinch...@ideasonboard.com> wrote:
> Hi Jean-François,
> On Tuesday 29 Nov 2016 21:04:55 Jean-Francois Moine wrote:
> > On Tue, 29 Nov 2016 21:33 +0200 Laurent Pinchart wrote:
> > >>> You need a third port for the HDMI encoder output, connected to an
> > >>> HDMI connector DT node.
> > >>
> > >> I don't see what you mean. The HDMI device is both the encoder
> > >> and connector (as the TDA998x):
> > >
> > > The driver might create both an encoder and a connector, but I very much
> > > doubt that the "allwinner,sun8i-a83t-hdmi" hardware contains a connector,
> > > unless the SoC package has an HDMI connector coming out of it :-)
> > >
> > >> plane -> DE2 mixer ---> TCON -----> HDMI -----> display device
> > >> ----- plane ------ - CRTC - - encoder \
> > >> connector -- (HDMI cable)
> > >> audio-controller - - audio-codec /
> > The schema is the same as the Dove Cubox: the TDA998x is just a chip
> > with some wires going out and the physical connector is supposed to be
> > at the end of the wires.
> I've missed the Dove Cubox DT bindings when they were submitted. Fortunately
> (or unfortunately for you, depending on how you look at it ;-)) I've paid
> attention this time.
> > Here, the HDMI pins of the SoC go to a pure hardware chip and then to
> > the physical connector. Which software entity do you want to add?
> I don't want to add a software entity, I just want to model the connector in
> DT as it's present in the system. Even though that's more common for other
> types than HDMI (LVDS for instance) it wouldn't be inconceivable to connect
> the HDMI signals to an on-board chim instead of an HDMI connector, so the
> encoder output should be modelled by a port and connected to a connector DT
> node in this case.
Well, I don't see what this connector can be.
May you give me a DT example?
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
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