Alyssa Rosenzweig specializes in writing GPU compilers/drivers. Other people, like marcan, specialize on the low level hardware and firmware stuff required to g

Alyssa Rosenzweig specializes in writing GPU compilers/drivers. Other people, like marcan, specialize on the low level hardware and firmware stuff required to get the SoC to boot, including the display controller. The DC and GPU are almost entirely unrelated. She's working ahead here so that GPU acceleration, which is predicted to be the single hardest feature to enable, can be developed more quickly once the easy part of booting linux is done.