Flawed implementations of open specs can be worked around with things like quirk tables. A spec held hostage by a non-cooperating vendor cannot. In the world of

Flawed implementations of open specs can be worked around with things like quirk tables. A spec held hostage by a non-cooperating vendor cannot. In the world of ARM SoCs, bad vendors won't even provide a device tree, just a binary image compiled from a patched kernel.