Hey,
I keep a gma500 repository, for personal use (Sony Vaio P21z/r with gma500) but incase someone wants to keep updated with alans latest patches. heres the links.
Branches are:
v2.6.38-rc8-gma500
v2.6.39-rc1-gma500
git://git.kernel.org/pub/scm/linux/kernel/git/kristoffer/linux-gma500.git
Btw, big thanks Alan for your hard work so far.
Best wishes
Kristoffer