[coreboot] Fwd: AMD RS690 TMDS

[Daniel Toussaint]

---------- Forwarded message ----------
From: Daniel Toussaint 
Date: Fri, Aug 21, 2009 at 2:33 PM
Subject: Re: [coreboot] AMD RS690 TMDS
To: Karl-Heinz Nirschl

Hello,

Meanwhile one of my team members has solved the problem, the info was all in
the BIOS porting guide, it was just not very obvious. Below is his patch:

Enable Direct TMDS for the RS690, which allows to display on HDMI and DVI
monitors.
Signed-off-by: Libra Li

On Tue, Aug 18, 2009 at 2:33 AM, Karl-Heinz Nirschl <
[e-mail]> wrote:
> hi,
>
> i have a m2a-vm hdmi and could provide dumps if needed. just tell me
> exactly what you need.
>
> best regards
>
> khn
>
> 2009/8/17 Carl-Daniel Hailfinger :
> > Hi Daniel,
> >
> > On 11.08.2009 18:32, Daniel Toussaint wrote:
> > > I am using the open source drivers , radeon and radeonhd. When I try it
>
> on a
> > > similar board with AMI bios , xrandr can switch on the HDMI port without
>
> any
> > > problems - with radeon and radeonhd. I guess I could give Catalyst a try
>
> to
> > > see if it makes any difference(maybe it does magic with the vga bios) I
> > > think however, that the problem lies in the fact that some config needs
>
> to
> > > be done in PCIE-GFX , so that one of the ports gets configured as TMDS.
> > > Right now, I am trying to get that to work - so far no results yet ....
> > > Another interesting fact is that I am working with this board that does
>
> not
> > > have another BIOS except for coreboot .... so I have nothing to compare
> > > register values with.
> >
> > I never tested HDMI on my board and I know that most boards need special
> > PCIe setup to get HDMI working. So unless this is implemented already,
> > you probably need to code it up yourself.
> > The issue should be independent of the video driver you're using.
> >
> > Maybe someone who has a board with working HDMI under the proprietary
> > BIOS can give you the register dumps you need.
> >
> > Regards,
> > Carl-Daniel