Oh, that doesn't sound too promising... I was not aware that amlogic is that unsupportive... Thanks for explaining.
Amlogic aren't at the front of the charge towards V4L2 but they aren't last in the race either and I wouldn't call them unsupportive. There is ongoing effort from them, but as is often the case, their "open source" development is done behind closed doors and even when you have direct contact with Engineering staff (as we do) it can be difficult to track where things are and things often just appear without announcement.