netdev - Re: [PATCH net-next] net: phy: meson-gxl: support more G12A-internal PHY versions

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Date:   Sun, 15 Jan 2023 17:57:55 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Russell King - ARM Linux <linux@...linux.org.uk>,
        David Miller <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>
Subject: Re: [PATCH net-next] net: phy: meson-gxl: support more G12A-internal
 PHY versions

On Sun, Jan 15, 2023 at 04:19:37PM +0100, Heiner Kallweit wrote:
> On my SC2-based system the genphy driver was used because the PHY
> identifies as 0x01803300. It works normal with the meson g12a
> driver after this change.
> Switch to PHY_ID_MATCH_MODEL to cover the different sub-versions.

Hi Heiner

Are there any datasheets for these devices? Anything which documents
the lower nibble really is a revision?

I'm just trying to avoid future problems where we find it is actually
a different PHY, needs its own MATCH_EXACT entry, and then we find we
break devices using 0x01803302 which we had no idea exists, but got
covered by this change.

	Andrew