Messages in this thread | | | From | Yan Markman <> | 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 13:01:07 +0000 |
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The DTS-patch for this board (in "old" format) is attached
Yan Markman Tel. 05-44732819
-----Original Message----- From: Stefan Chulski Sent: Monday, March 19, 2018 2:58 PM To: Russell King - ARM Linux <linux@armlinux.org.uk>; Antoine Tenart <antoine.tenart@bootlin.com> Cc: davem@davemloft.net; kishon@ti.com; gregory.clement@bootlin.com; andrew@lunn.ch; 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
> > > 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. [unhandled content-type:application/octet-stream] | |