netdev - Re: [PATCH 3/9] net: dsa: mv88e6xxx: implement get_phy

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Date:   Tue, 8 Nov 2022 14:36:51 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Lukasz Majewski <lukma@...x.de>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>
Subject: Re: [PATCH 3/9] net: dsa: mv88e6xxx: implement get_phy_address

> Would it be possible to do like armada-3720-turris-mox.dts does, and put
> the phy-handle in the device tree, avoiding the need for so many PHY
> address translation quirks?
> 
> If you're going to have U-Boot support for this switch as well, the
> phy-handle mechanism is the only thing that U-Boot supports, so device
> trees written in this way will work for both (and can be passed by
> U-Boot to Linux):

This is how i expect any board using the MV88E6141 and MV88E6341 work.
It has the same issue that it is not a 1:1 mapping.

Portability with U-boot is an interesting argument. Maybe there are
patches to u-boot to add the same sort of quirks?

	Andrew