Re: [PATCH net-next] net: dsa: remove OF-based MDIO bus registration from DSA core

[Arınç ÜNAL]

On 29.01.2024 17:56, Vladimir Oltean wrote:
> On Sat, Jan 27, 2024 at 11:23:33PM -0300, Luiz Angelo Daros de Luca wrote:
> > > > IIUC, Luiz made the original patch for the realtek switches. Shouldn't
> > > > we wait until realtek registers ds->user_mii_bus on its own, before
> > > > reverting? Otherwise, you're basically saying that Luiz made the DSA
> > > > core patch without needing it.
> > >
> > > My findings point to that. Luiz made the patch to optionally register the
> > > MDIO bus of the MDIO controlled Realtek switches OF-based. So it's not
> > > necessary to wait.
> >
> > Back in the time when I wrote that code, with the phy_read/write in
> > dsa_switch_ops, the OF node was only required to associate IRQ to each
> > port. Until my patch to register its own mdiobus driver lands (I hope
> > that happens before the next version), the port status will fall back
> > to polling. I don't think it is a critical feature but I'll let the
> > maintainers decide. ACK for me.
> >
> > Regards,
> >
> > Luiz
>
> It isn't really great that this loses IRQ support for Realtek internal PHYs,
> especially since Arınç's commit message did not estimate this would happen.
>
> I don't see why this patch could not wait until you resubmit the realtek
> consolidation set and it gets accepted.

I agree. I didn't anticipate that realtek-mdio didn't set IRQs on PHYs for
the MDIO bus registered non-OF-based. I'd much rather wait and then send v2
with the mention to realtek-mdio removed.

Arınç