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

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Message-ID: <20221111213813.jfelkktkj5wk45qy@skbuf>
Date:   Fri, 11 Nov 2022 23:38:13 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Lukasz Majewski <lukma@...x.de>
Cc:     Andrew Lunn <andrew@...n.ch>,
        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

On Thu, Nov 10, 2022 at 06:00:53PM +0100, Lukasz Majewski wrote:
> Maybe in the generic case of PHY, yes (via Driver Model).
> 
> However, when you delve into the mv88e6xxx driver [1] - you would find
> that this is not supporting it yet ...
> 
> As fair as I know - for the driver [1] - there was no ongoing effort
> recently.
> 
> Links:
> [1] -
> https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/net/phy/mv88e61xx.c

U-Boot mailing list is moving a bit slower than netdev (and the patch
set is not yet applied despite being ready), but I was talking about
this:
https://patchwork.ozlabs.org/project/uboot/list/?series=324983

If you study DM_DSA, you'll see that only supporting PHY connection via
phy-handle (even if the PHY is internal) (or fixed-link, in lack of a
PHY) was an absolutely deliberate decision.