Re: [PATCH 2/2] net: mdio: support c45 peripherals on c22 busses

From: Geert Uytterhoeven
Date: Tue Feb 08 2022 - 11:30:19 EST


Hi Danilo,

On Sun, Apr 4, 2021 at 8:26 PM Danilo Krummrich
<danilokrummrich@xxxxxxxxxxxxx> wrote:
> On Fri, Apr 02, 2021 at 02:28:54PM +0200, Andrew Lunn wrote:
> > > > Do you actually have a requirement for this?
> > > >
> > > Yes, the Marvell 88Q2112 1000Base-T1 PHY. But actually, I just recognize that it
> > > should be possible to just register it with the compatible string
> > > "ethernet-phy-ieee802.3-c22" instead of "ethernet-phy-ieee802.3-c45", this
> > > should result in probing it as c22 PHY and doing indirect accesses through
> > > phy_*_mmd().
> >
> > Hi Danilo
> >
> > Do you plan to submit a driver for this?
>
> Yes, I'll get it ready once I got some spare time.

Did this ever happen? I cannot find such a patch.

> > Does this device have an ID in register 2 and 3 in C22 space?
> >
> Currently, I don't have access to the datasheet and I don't remember.
> In a couple of days I should have access to the HW again and I will try.

I'm asking because I have access to a board with Marvell 88Q2110 PHYs
(ID 0x002b0983).

Thanks!

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds