linux-kernel - Re: [PATCHv2 0/5] Support for Marvell switches with integrated CPUs

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Date:   Thu, 5 Jan 2017 19:46:43 +0000
From:   Chris Packham <Chris.Packham@...iedtelesis.co.nz>
To:     Andrew Lunn <andrew@...n.ch>
CC:     Florian Fainelli <f.fainelli@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jason Cooper <jason@...edaemon.net>,
        "Gregory Clement" <gregory.clement@...e-electrons.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Arnd Bergmann <arnd@...db.de>,
        Thierry Reding <treding@...dia.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Juri Lelli <juri.lelli@....com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Kalyan Kinthada <Kalyan.Kinthada@...iedtelesis.co.nz>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCHv2 0/5] Support for Marvell switches with integrated CPUs

On 06/01/17 02:10, Andrew Lunn wrote:
>> I'd love to see a switchdev driver but it's a huge task (and no I'm not
>> committing to writing it). As it stands Marvell ship a switch SDK
>> largely executes in userspace with a small kernel module providing some
>> linkage to the underlying hardware.
>
> Is there any similarity to the mv88e6xxx family?
>
> If it was similar registers, just a different access mechanising, we
> could probably extend the mv88e6xxx to support MMIO as well as MDIO.

No the prestera family of devices are considerably more powerful (and 
complex) than the linkstreet devices.