On Thu, Aug 24, 2017 at 06:04:01PM +0100, Russell King - ARM Linux wrote: > On Thu, Aug 24, 2017 at 06:57:43PM +0200, Andrew Lunn wrote: > > > I see what could be the issue but I do not understand one aspect though: > > > how could we switch from one PHY to another, as there's only one output > > > between the SoC (and so a given GoP#) and the board. So if a given PHY > > > can handle multiple modes I see, but in the other case a muxing > > > somewhere would be needed? Or did I miss something? > > > > I think we need a hardware diagram... > > > > How are the RJ45, copper PHY, SFP module connected to the SoC? > > > > Somewhere there must be a mux, to select between copper and > > fibre. Where is that mux? > > In the 88x3310 PHY: > > .------- RJ45 > MVPP2 ----- 88x3310 PHY > `------- SFP+
And the "MVPP2" part can be expended to:
.-- GoP #0 --.
MVPP2 ----- GoP #1 ---- Comphy lane #X -- 88x3310
`-- GoP #2 --'
Thanks!
Antoine
--
Antoine Ténart, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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