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Date:   Sat, 5 Sep 2020 17:37:29 +0200
From:   Andrew Lunn <>
To:     Florian Fainelli <>
Cc:, Vivien Didelot <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Rob Herring <>,
        Frank Rowand <>,
        open list <>,
Subject: Re: [PATCH net-next v2 2/2] net: dsa: bcm_sf2: Ensure that MDIO
 diversion is used

On Fri, Sep 04, 2020 at 02:37:30PM -0700, Florian Fainelli wrote:
> Registering our slave MDIO bus outside of the OF infrastructure is
> necessary in order to avoid creating double references of the same
> Device Tree nodes, however it is not sufficient to guarantee that the
> MDIO bus diversion is used because of_phy_connect() will still resolve
> to a valid PHY phandle and it will connect to the PHY using its parent
> MDIO bus which is still the SF2 master MDIO bus. The reason for that is
> because BCM7445 systems were already shipped with a Device Tree blob
> looking like this (irrelevant parts omitted for simplicity):

Hi Florian

Thanks for the extended commit message.

Reviewed-by: Andrew Lunn <>


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