From: Stefan Chulski <stefanc@marvell.com>
To: Russell King - ARM Linux <linux@armlinux.org.uk>,
Antoine Tenart <antoine.tenart@bootlin.com>
Cc: "davem@davemloft.net" <davem@davemloft.net>,
"kishon@ti.com" <kishon@ti.com>,
"gregory.clement@bootlin.com" <gregory.clement@bootlin.com>,
"andrew@lunn.ch" <andrew@lunn.ch>,
"jason@lakedaemon.net" <jason@lakedaemon.net>,
"sebastian.hesselbarth@gmail.com"
<sebastian.hesselbarth@gmail.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"thomas.petazzoni@bootlin.com" <thomas.petazzoni@bootlin.com>,
"maxime.chevallier@bootlin.com" <maxime.chevallier@bootlin.com>,
"miquel.raynal@bootlin.com" <miquel.raynal@bootlin.com>,
Nadav Haklai <nadavh@marvell.com>,
Yan Markman <ymarkman@marvell.com>,
"mw@semihalf.com" <mw@semihalf.com>,
"linux-arm-kernel@lists.infradead.org"
<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
Date: Mon, 19 Mar 2018 12:58:24 +0000 [thread overview]
Message-ID: <4e11135ba2644f76beb41a307c9d990a@IL-EXCH01.marvell.com> (raw)
In-Reply-To: <20180319111205.GB2743@n2100.armlinux.org.uk>
> > > 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.
next prev parent reply other threads:[~2018-03-19 12:59 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-16 10:33 [PATCH net-next 00/10] net: mvpp2: phylink conversion Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 01/10] net: mvpp2: align the ethtool ops definition Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 02/10] net: phy: phylink: allow 10GKR interface to use in-band negotiation Antoine Tenart
2018-03-16 15:53 ` Russell King - ARM Linux
2018-03-19 8:52 ` Antoine Tenart
2018-03-19 11:12 ` Russell King - ARM Linux
2018-03-19 12:52 ` Antoine Tenart
2018-03-19 12:59 ` Andrew Lunn
2018-03-19 13:03 ` [EXT] " Stefan Chulski
2018-03-19 13:08 ` Andrew Lunn
2018-03-19 13:13 ` Antoine Tenart
2018-03-19 13:24 ` Andrew Lunn
2018-03-19 13:19 ` Stefan Chulski
2018-03-19 13:23 ` Andrew Lunn
2018-03-19 13:42 ` Russell King - ARM Linux
2018-03-19 13:10 ` Antoine Tenart
2018-03-19 13:18 ` Russell King - ARM Linux
2018-03-19 13:26 ` Antoine Tenart
2018-03-19 12:58 ` Stefan Chulski [this message]
2018-03-19 13:01 ` [EXT] " Yan Markman
2018-03-19 13:05 ` Russell King - ARM Linux
2018-03-16 10:33 ` [PATCH net-next 03/10] net: mvpp2: phylink support Antoine Tenart
2018-03-16 16:03 ` Russell King - ARM Linux
2018-03-19 8:45 ` Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 04/10] phy: add 2.5G SGMII mode to the phy_mode enum Antoine Tenart
2018-03-19 9:46 ` Kishon Vijay Abraham I
2018-03-16 10:33 ` [PATCH net-next 05/10] phy: cp110-comphy: 2.5G SGMII mode Antoine Tenart
2018-03-18 4:42 ` Baruch Siach
2018-03-19 8:44 ` Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 06/10] net: mvpp2: 1000baseX support Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 07/10] net: mvpp2: 2500baseX support Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 08/10] arm64: dts: marvell: 7040-db: set the 10G interface management to in-band Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 09/10] arm64: dts: marvell: 8040-db: set the 10G interfaces " Antoine Tenart
2018-03-16 10:33 ` [PATCH net-next 10/10] arm64: dts: marvell: mcbin: enable the fourth network interface Antoine Tenart
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