U-Boot PHY_MSCC vs PHY_VITESSE

[Conor Dooley]

On Mon, Sep 29, 2025 at 04:43:36PM -0600, Tom Rini wrote:
> Hey all,
> 
> As part of working on "allyesconfig" support I ran into the following
> problem. Both drivers/net/phy/mscc.c and drivers/net/phy/vitesse.c
> implement support for the VSC8584 PHY. The vitesse.c driver is much
> older and only had VSC8584 support added for a specific Freescale
> Layerscape platform whereas mscc.c is modern and been updated with
> newer PHYs as well. And we need one driver to support this phy, not two.
> I am inclined to remove support from vitesse.c. However, only 4
> platforms use the PHY_MSCC driver and everyone else uses PHY_VITESSE.
> 
> I'm cc'ing all of the board maintainers (other than PowerPC platforms)
> that use PHY_VITESEE today to see what their feedback is on which way to
> go here. I'm ignoring PowerPC because that can just stay on the
> PHY_VITESSE driver based on timing of changes in git log.

The mpfs icicle board is using PHY_VITESSE because the phy it has
(vsc8662) is only supported by that driver. Same in Linux for that phy.
We've got no users of the model you're talking about.

FWIW, I checked our "in house" linux config and it uses the generic phy
driver, rather than the vitesse one. I wonder if we can get away with
that in U-Boot too?
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