Re: [PATCH net] net: dsa: realtek: rtl8365mb: fix GMII caps for ports with internal PHY

[Luiz Angelo Daros de Luca]

> > > Luiz, Russel:
> > >
> > > Commit a5dba0f207e5 ought to have had a Fixes: tag I think, because it
> > > claims to have been fixing a regression in the net-next tree - is that
> > > right? I seem to have missed both referenced commits when they were
> > > posted and never hit this issue personally. I only found things now
> > > during some other refactoring and the test for GMII looked weird to me
> > > so I went and investigated.
> > >
> > > Could you please help me identify that Fixes: tag? Just for my own
> > > understanding of what caused this added requirement for GMII on ports
> > > with internal PHY.
> >
> > I have absolutely no idea. I don't think any "requirement" has ever been
> > added - phylib has always defaulted to GMII, so as the driver stood when
> > it was first submitted on Oct 18 2021, I don't see how it could have
> > worked, unless the DT it was being tested with specified a phy-mode of
> > "internal". As you were the one who submitted it, you would have a
> > better idea.
> >
> > The only suggestion I have is to bisect to find out exactly what caused
> > the GMII vs INTERNAL issue to crop up.
>
> Alright, thanks for the quick response. Maybe Luiz has a better idea, otherwise
> I will try bisecting if I find the time.

I don't know. I just got hit by the issue after a rebase (sorry, I
don't know exactly from which commit I was rebasing).
But I did test the net (!-next) and left a working commit note. You
can diff 3dd7d40b43..a5dba0f20.
If I'm to guess, I would blame:

21bd64bd717de: net: dsa: consolidate phylink creation

Regards,

Luiz