Dsa multi-cpu port problem

[Rosen Penev]

On Wed, Mar 10, 2021 at 4:19 PM Ansuel Smith <ansuelsmth at gmail.com> wrote:
>
> 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.
I closed https://github.com/openwrt/openwrt/pull/3655 since 21.02 was
branched. I would use that patchset as the Turris people are working
on upstreaming a bunch of stuff.
>
> 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)
>
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