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

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Message-ID: <CAMuHMdUCDYvjZCrybxSF5rLGM81Ujkg=CSp-ymFWV+E8S5Wq6A@mail.gmail.com>
Date:   Tue, 8 Feb 2022 17:30:01 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Danilo Krummrich <danilokrummrich@...develop.de>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jeremy Linton <jeremy.linton@....com>
Subject: Re: [PATCH 2/2] net: mdio: support c45 peripherals on c22 busses

Hi Danilo,

On Sun, Apr 4, 2021 at 8:26 PM Danilo Krummrich
<danilokrummrich@...develop.de> 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@...ux-m68k.org

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