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Date: Fri, 15 Feb 2019 17:23:44 +0000 From: Stefan Chulski <stefanc@...vell.com> To: Russell King - ARM Linux admin <linux@...linux.org.uk>, Antoine Tenart <antoine.tenart@...tlin.com> CC: "davem@...emloft.net" <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "thomas.petazzoni@...tlin.com" <thomas.petazzoni@...tlin.com>, "maxime.chevallier@...tlin.com" <maxime.chevallier@...tlin.com>, "gregory.clement@...tlin.com" <gregory.clement@...tlin.com>, "miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>, Nadav Haklai <nadavh@...vell.com>, Yan Markman <ymarkman@...vell.com>, "mw@...ihalf.com" <mw@...ihalf.com> Subject: RE: [PATCH net-next 10/13] net: mvpp2: reset the XPCS while reconfiguring the serdes lanes > On Fri, Feb 15, 2019 at 04:32:38PM +0100, Antoine Tenart wrote: > > The documentation advises to set the XPCS in reset while reconfiguring > > the serdes lanes. This seems to be a good thing to do, but the PPv2 > > driver wasn't doing it. This patch fixes it. > > Hmm. That statment seems to have some ambiguity in it - we do two > "reconfigurations" - one may be upon initialisation, where the lane is already > configured for 10Gbase-KR, and we're re-initialising it for the same mode. > The other case is when we're switching between 10Gbase-KR and SGMII, or > as will be the case with 2.5G support for the Alaska PHYs, 2500base-X. Exist one mode that we should add to PPv2&COMPHY 5Gbase-KR(5GBASE-T). Stefan, Best Regards.
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