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Date:   Wed, 25 Nov 2020 17:30:04 -0800
From:   Florian Fainelli <>
To:     Andrew Lunn <>, Lukasz Majewski <>
Cc:     Peng Fan <>, Fugang Duan <>,
        Shawn Guo <>,,,,, "David S . Miller" <>,
        NXP Linux Team <>,
        Jakub Kicinski <>,
        Vladimir Oltean <>,
        Fabio Estevam <>,
        Vivien Didelot <>,
Subject: Re: [RFC 0/4] net: l2switch: Provide support for L2 switch on i.MX28

On 11/25/2020 4:00 PM, Andrew Lunn wrote:
> On Thu, Nov 26, 2020 at 12:24:55AM +0100, Lukasz Majewski wrote:
>> This is the first attempt to add support for L2 switch available on some NXP
>> devices - i.e. iMX287 or VF610. This patch set uses common FEC and DSA code.
> Interesting. I need to take another look at the Vybrid manual. Last
> time i looked, i was more thinking of a pure switchdev driver, not a
> DSA driver. So i'm not sure this is the correct architecture. But has
> been a while since i looked at the datasheet.

Agreed the block diagram shows one DMA for each "switch port" which
definitively fits more within the switchdev model than the DSA model
that re-purposes an existing Ethernet MAC controller as-is and bolts on
an integrated or external switch IC.

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