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

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Date:   Mon, 14 Nov 2022 11:10:22 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Vladimir Oltean <olteanv@...il.com>
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

Hi Vladimir,

> 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
> 

Thanks for sharing this link. It looks like this driver also supports
switchnig addresses for Marvell ICs.

(This was the goal for mine previous patches).


> 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.

Ok. I do agree now - will adjust the code accordingly.


Best regards,

Lukasz Majewski

--

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