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SubjectRE: [EXT] Re: [PATCH net-next 02/10] net: phy: phylink: allow 10GKR interface to use in-band negotiation
Date


> -----Original Message-----
> From: Andrew Lunn [mailto:andrew@lunn.ch]
> Sent: Monday, March 19, 2018 3:08 PM
> To: Stefan Chulski <stefanc@marvell.com>
> Cc: Antoine Tenart <antoine.tenart@bootlin.com>; Russell King - ARM Linux
> <linux@armlinux.org.uk>; davem@davemloft.net; kishon@ti.com;
> gregory.clement@bootlin.com; jason@lakedaemon.net;
> sebastian.hesselbarth@gmail.com; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org; thomas.petazzoni@bootlin.com;
> maxime.chevallier@bootlin.com; miquel.raynal@bootlin.com; Nadav Haklai
> <nadavh@marvell.com>; Yan Markman <ymarkman@marvell.com>;
> mw@semihalf.com; linux-arm-kernel@lists.infradead.org
> Subject: Re: [EXT] Re: [PATCH net-next 02/10] net: phy: phylink: allow 10GKR
> interface to use in-band negotiation
>
> > > If they don't have PHYs, how are the connected to the outside world?
> > >
> > > Andrew
> >
> > By external SFP or direct attached cable.
>
> Maybe i'm missing something, but don't you just need to add an SFP device
> in the device tree. The SFP code and PHYLINK will work together, query what
> the SFP module is, use the GPIOs to determine link up/down and module
> present, and tell the MAC how to configure the MAC-SFP link?
>
> Andrew

phylink pool SFP loss signal to determine link up/down?

Stefan,
Best Regards.

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