Sorry for a dumb questions (and for bad English), but I couldn't find any information about current state of PRI support in a different kernel trees.
1. What about vanilla kernel?
For example what is the difference between 4.5 vanilla branch and 4.5 raspberry branch?
What wouldn't work with vanilla kernel? (especially for PRO2/RPI3)
2. Which raspberry kernel branch is more complete in area of RPI support?
For example there is 4.5 branch in raspberry tree, are all actual RPI-specific patches from earlier branches included into this branch already?
3. Which branch should be considered as stable enough?