Messages in this thread | | | From | Stefan Chulski <> | Subject | RE: [EXT] Re: [PATCH net-next 02/10] net: phy: phylink: allow 10GKR interface to use in-band negotiation | Date | Mon, 19 Mar 2018 12:58:24 +0000 |
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> > > There is no inband negotiation like there is with 802.3z or SGMII, > > > so this makes no sense. > > > > Oh, that's what I feared. I read some docs but probably will need more > > :) > > > > Anyway, the reason to use in-band negotiation was also to avoid using > > fixed-link. It would work but always report the link is up, which for > > the user isn't a great experience as we have a way to detect this. > > > > What would you suggest to achieve this in a reasonable way? > > The intention of this test in phylink_of_phy_connect() is to avoid failing > when there is no requirement for a PHY to be present (such as a fixed link, or > an 802.3z link.) However, with 10G PHYs such as the 3310, we need the PHY > so we can read the speed from it, and so know whether to downgrade the > MAC to SGMII mode, or having downgraded the MAC, upgrade it back to 10G > mode when the PHY switches to 10G. > > I'm guessing that you're wanting this for the DB boards, but I don't see why. > Do they not have PHYs?
New Solid Run board MACCHIATObin Single Shot doesn't has 3310 PHY either, like DB boards. https://www.cnx-software.com/2017/12/20/solidrun-macchiatobin-single-shot-networking-board-launched-for-269-and-up/
Stefan, Best Regards.
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