Dsa multi-cpu port problem

[Ansuel Smith]

I'm working on the conversion of ipq806x to dsa.
It's been 2 years and still dsa doesn't support multi-cpu port.
Online there are many patches that add support for this but they were
never accepted upstream since there isn't a solution that would work
for all the switches. Fact is that openwrt is different and have some
flexibility about this kind problem.
There is actually a patchset (rejected) that adds multi-cpu support
defined in the dts that can be used and doesn't look that bad.

So here is the question:
Considering the fact that at least 3 target have disabled port (mtk,
mvebu and upcoming ipq806x) why not use the proposed patch
while upstream a final solution is found for this problem?
Turris already use a variant of that patch and also mediatek use
it.

The idea would be to place the patch as a hack in the generic
target dir and targets can add patches to modify the dsa driver
accordingly (if needed).

(the multi-cpu variant i'm talking about it the one that statically
link a port to a dedicated cpu port in the dts)