Re: [RFC 00/16] drm/nouveau: initial support for GK20A (Tegra K1)

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Hi Alexandre,

On Fri, Jan 31, 2014 at 10:16 PM, Alexandre Courbot <acourbot@xxxxxxxxxx> wrote:
> I guess my email address might surprise some of you, so let me anticipate some
> questions you might have. :P Yes, this work is endorsed by NVIDIA. Several other
> NVIDIAns (CC'd), including core GPU experts, have provided significant technical
> guidance and will continue their involvement. Special thanks go to Terje
> Bergstrom and Ken Adams for their invaluable GPU expertise, and Thierry Reding
> (at FOSDEM this weekend) for help with debugging and user-space testing.
>
> Let me also stress that although very exciting, this effort is still
> experimental, so I would like to make sure that nobody makes excessive
> expectations based on these few patches. The scope of this work is strictly
> limited to Tegra (although given the similarities desktop GPU support will
> certainly benefit from it indirectly), and we do not have any plan to work on
> user-space support. So do not uninstall that proprietary driver just yet. ;)
>
> With this being clarified, we are looking forward to getting your feedback and
> working with you guys to bring and improve Tegra K1 support into Nouveau! :)

I've sent a couple of fairly trivial comments, as you saw, and I
suspect that others with a better understanding of the guts will have
more substantial architectural feedback, esp after the weekend/FOSDEM.
However, since no one's said it already -- welcome to Nouveau!

>From the looks of it, you could bring up a full open-source stack with
your patches (i.e. Xorg + nouveau DDX + mesa) and use PRIME to render
stuff (assuming the actual display hw has an X ddx). Although I
suspect that you're going to want to use your own drivers. Still a
little curious if you've tried the open-source stack and whether it
worked. [Not sure what the status is of render-node support is in
mesa, but perhaps it's enough to try running piglit tests, if you
can't get X going with the display HW.]

  -ilia
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