netdev - Re: [PATCH v4 net-next 0/9] Convert Felix DSA switch to PHYLINK

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Message-ID: <CA+h21hoqE2RxsmUUoS6DKYZMMnfHRVf1S9dw3jHsHvNnxGjqgw@mail.gmail.com>
Date:   Mon, 6 Jan 2020 00:58:10 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        "Y.b. Lu" <yangbo.lu@....com>, netdev <netdev@...r.kernel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [PATCH v4 net-next 0/9] Convert Felix DSA switch to PHYLINK

On Mon, 6 Jan 2020 at 00:56, David Miller <davem@...emloft.net> wrote:
>
> From: Vladimir Oltean <olteanv@...il.com>
> Date: Fri,  3 Jan 2020 22:01:18 +0200
>
> > Unlike most other conversions, this one is not by far a trivial one, and should
> > be seen as "Layerscape PCS meets PHYLINK". Actually, the PCS doesn't
> > need a lot of hand-holding and most of our other devices 'just work'
> > (this one included) without any sort of operating system awareness, just
> > an initialization procedure done typically in the bootloader.
> > Our issues start when the PCS stops from "just working", and that is
> > where PHYLINK comes in handy.
> >
> > The PCS is not specific to the Vitesse / Microsemi / Microchip switching core
> > at all. Variations of this SerDes/PCS design can also be found on DPAA1 and
> > DPAA2 hardware.
> >
> > The main idea of the abstraction provided is that the PCS looks so much like a
> > PHY device, that we model it as an actual PHY device and run the generic PHY
> > functions on it, where appropriate.
>  ...
>
> Series applied, please address any follow-up feedback you receive.
>
> Thank you.

Thanks David, sure, ready for action.

-Vladimir