3D accelerated support under BeagleBone Black

[John-Mark Gurney]

Black Fox wrote this message on Tue, Nov 18, 2014 at 01:15 -0500:
> On 18 Nov 2014 01:13, "John-Mark Gurney" <jmg at funkthat.com> wrote:
> >
> > Black Fox wrote this message on Tue, Nov 18, 2014 at 00:42 -0500:
> > > I have a BeagleBone Black here and I have an LCD I hooked up to it to
> get
> > > graphics. I was wondering whether the DVI header is working, because I'd
> > > love to get this onto a bigger screen.
> >
> > Sadly, the docs for the HDMI framer chip requires an NDA...  Once I
> > get a copy of the programming docs, I plan to get things working...
> Ah yes company NDAs are pretty awful to deal with. So I guess this applies
> for the DVI header/cape as well?
> 
> Good luck and keep us updated on progress

The DVI-D cape uses a different framer than the BBB...  It uses the
TFP410 from TI, and a basic register description list[1] is freely
available for it..  I'm not sure if that is enough to write a driver
for it though, but it looks like it may be...

There is a differences between the two chips, as the TI chip does only
video, and only supports an older version of the DVI spec, while the
NXP on board chip supports audio, and other advanced features of
HDMI...

The LCD driver side is supposedly already written for the BBB, the
only thing necessary is the framer driver...  As the DVI-D cape uses
the LCD driver, if you were to write a driver to activate the TFP410,
it should "just work" assuming that the existing LCD driver works..

[1] http://www.ti.com/lit/ds/symlink/tfp410.pdf

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."