[Nouveau] offer to help, DCB

Andy Ritger aritger at nvidia.com
Tue Sep 24 11:19:38 PDT 2013

On Tue, Sep 24, 2013 at 12:12:02AM -0700, Maarten Lankhorst wrote:
> Hey,
> Op 24-09-13 06:44, Andy Ritger schreef:
> > Hi Nouveau developers,
> >
> > NVIDIA is releasing public documentation on certain aspects of our GPUs,
> > with the intent to address areas that impact the out-of-the-box usability
> > of NVIDIA GPUs with Nouveau.  We intend to provide more documentation
> > over time, and guidance in additional areas as we are able.
> >
> > As a first step towards that, we've posted a document here:
> >
> >     ftp://download.nvidia.com/open-gpu-doc/DCB/1/DCB-4.0-Specification.html
> >
> > that documents the Device Control Block ("DCB") layout in the VBIOS.
> > The DCB describes board topology and the board's display connectors.
> >
> > I suspect much of the information in that document is not news for
> > the Nouveau community, but hopefully it will be helpful to confirm your
> > understanding or flesh out the implementation of a few unhandled cases.
> >
> > A few of us who work on NVIDIA's proprietary Linux GPU driver will pay
> > attention to nouveau at lists.freedesktop.org and try to chime in when
> > we can.
> >
> > If there are specific areas of documentation that would most help you, that
> > feedback would help NVIDIA prioritize our documentation efforts.
> >
> > If you have specific questions for NVIDIA, you can ask here, or direct
> > them to: open-gpu-doc at nvidia.com.

Sorry, I got the email address wrong.  The right address is:

gpu-public-documentation at nvidia.com

sorry I didn't double check the address before sending the announcement.

> > I can't promise we'll be able to answer
> > everything, but we'll provide best-effort in areas where we are able.
> You rock! :D

:)  Thanks, Maarten.

> Our biggest struggle at the moment is the video clocking and power management, which is highly device specific
> and depends on configuration too.

Those will be two of the more difficult areas for us to address, but
we'll see what can be done.

> A complete video bios documentation would be nice too, I understand that will
> take a bit longer than just the dcb. :)

BIOS-related information should be a bit easier to get through the
pipeline than other things, so we'll focus on that to start.

I'm looking forward to collaborating with you guys,
- Andy

> ~Maarten

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