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Message-ID: <20171227222401.GT10595@n2100.armlinux.org.uk> Date: Wed, 27 Dec 2017 22:24:01 +0000 From: Russell King - ARM Linux <linux@...linux.org.uk> To: Antoine Tenart <antoine.tenart@...e-electrons.com> Cc: davem@...emloft.net, kishon@...com, andrew@...n.ch, jason@...edaemon.net, sebastian.hesselbarth@...il.com, gregory.clement@...e-electrons.com, mw@...ihalf.com, stefanc@...vell.com, ymarkman@...vell.com, thomas.petazzoni@...e-electrons.com, miquel.raynal@...e-electrons.com, nadavh@...vell.com, netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH net-next 5/6] arm64: dts: marvell: mcbin: enable the fourth network interface On Wed, Dec 27, 2017 at 11:14:45PM +0100, Antoine Tenart wrote: > This patch enables the fourth network interface on the Marvell > Macchiatobin. It is configured in the 2500Base-X PHY mode. > > Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com> > --- > arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts > index b3350827ee55..c51efd511324 100644 > --- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts > +++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts > @@ -279,6 +279,14 @@ > phys = <&cps_comphy0 1>; > }; > > +&cps_eth2 { > + /* CPS Lane 5 */ > + status = "okay"; > + phy-mode = "2500base-x"; > + /* Generic PHY, providing serdes lanes */ > + phys = <&cps_comphy5 2>; > +}; > + This is wrong. This lane is connected to a SFP cage which can support more than just 2500base-X. Tying it in this way to 2500base-X means that this port does not support conenctions at 1000base-X, despite that's one of the most popular and more standardised speeds. So, I feel I have to NAK this patch in its current form. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up
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