netdev - Re: Is it currently possible to connect SFP to dsa port?

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Message-ID: <2d62b88b-3a92-d026-effe-defcb9d5838b@gmail.com>
Date:   Tue, 7 Aug 2018 12:43:11 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Marek Behun <marek.behun@....cz>, Andrew Lunn <andrew@...n.ch>
Cc:     netdev@...r.kernel.org,
        Russell King - ARM Linux <linux@...linux.org.uk>
Subject: Re: Is it currently possible to connect SFP to dsa port?



On 08/07/2018 12:00 PM, Marek Behun wrote:
> Hello,
> 
> I have a question regarding DSA/SFP code.
> 
> We are working on a modular router where it is possible to connect
> multiple switch cards and at most one SFP cage card to a router.
> 
> Does the sfp/dsa driver support connecting SFP port to a DSA port? For
> example the Marvell 6390 switch has two SGMII ports and 8 1Gbps PHYs.
> One can then connect those 8 1Gbps PHYs to RJ-45 connectors, the first
> SGMII port to the CPU and the second SGMII port to SFP.
> 
> I think this is currently not possible, but am not sure.

DSA recently gained support for PHYLINK which would allow you to do
that, please make sure your tree has this commit at least:

aab9c4067d2389d0adfc9c53806437df7b0fe3d5 ("net: dsa: Plug in PHYLINK
support").
-- 
Florian