They may be changing a little bit, slowly. They're not used to this sort of thing, at all. This is actually a big step: this wasn't just SoC repurposed for the

They may be changing a little bit, slowly. They're not used to this sort of thing, at all. This is actually a big step: this wasn't just SoC repurposed for the Pi, this SoC was created for the Pi2. There are a lot of details missing about the VC4, that's true. They could still publish a lot more of those than they have. We should be given enough to start the ARMs, warm the caches, talk to the devices and manage, start a kernel, even without video. The architecture means that the GPU plays the host role, however, so Linux is pretty much postboxing things to it asking it to do things when it comes to the devices - this complicates things, because that means the GPU firmware is probably going to have to be a bit more than a simple shim to get by. They can't just open-source all their side of the firmware either - it's based on a commercial RTOS, ThreadX. That's why they hired a guy to do a rewrite. Arguably still better than NVIDIA. <g> Also better than MediaTek and the like - the usual way you get anything out of them is someone steals it (back).