Hi there,
I did a talk at LCA yesterday evening that covered Embedded GPUs and Open Source (or the lack thereof); slides are available here:
https://wiki.linaro.org/ChristianReis
and a video recording may be available as well later; I'll tack it into the thread if I get a URL for it.
I'm happy to answer questions about the presentations or to talk about the problems and possible solutions. One interesting outcome was the idea of a one-day cross-vendor summit that we could tack onto an existing open source event; Plumbers would be an interesting event for that and if enough people are interested I'd be willing to put effort into helping make that happen.
Thanks to Jesse and Paul for the help they put into preparing for the presentation. Your comments welcome,