From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: Re: [PATCH net-next 1/2] net: phy: Add Speed downshift set driver for Microsemi PHYs. Date: Fri, 14 Oct 2016 14:12:32 +0200 Message-ID: <20161014121232.GH5822@lunn.ch> References: <1476445233-26524-1-git-send-email-Raju.Lakkaraju@microsemi.com> <1476445233-26524-2-git-send-email-Raju.Lakkaraju@microsemi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1476445233-26524-2-git-send-email-Raju.Lakkaraju@microsemi.com> Sender: netdev-owner@vger.kernel.org To: Raju Lakkaraju Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, f.fainelli@gmail.com, Allan.Nielsen@microsemi.com List-Id: devicetree@vger.kernel.org On Fri, Oct 14, 2016 at 05:10:32PM +0530, Raju Lakkaraju wrote: > From: Raju Lakkaraju > > For operation in cabling environments that are incompatible with > 1000BAST-T, VSC8531 device provides an automatic link speed > downshift operation. When enabled, the device automatically changes > its 1000BAST-T auto-negotiation to the next slower speed after > a configured number of failed attempts at 1000BAST-T. > This feature is useful in setting up in networks using older cable > installations that include only pairs A and B, and not pairs C and D. Any reason not to just turn this on by default when auto-neg is enabled? Andrew