From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Beaglebone Black Ethernet Failures To: meta-ti@lists.yoctoproject.org From: "Dave Tucker" X-Originating-Location: Washington, US (154.3.44.17) X-Originating-Platform: Linux Firefox 86 User-Agent: GROUPS.IO Web Poster MIME-Version: 1.0 Date: Wed, 10 Mar 2021 05:27:22 -0800 Message-ID: Content-Type: multipart/alternative; boundary="sYL5DjBOmP45TVSr6MFU" --sYL5DjBOmP45TVSr6MFU Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable I have been using a Beaglebone Black for a project for years.=C2=A0 I recen= tly upgraded from Dunfell to Gatesgarth and again began experiencing a prob= lem with the ethernet interface failing to come online 10% of the time, a p= roblem which can only be fixed by a power cycle (not a reboot).=C2=A0 This = is a well known problem documented by this thread ( https://groups.google.c= om/g/beagleboard/c/9mctrG26Mc8 ) going back over 7 years.=C2=A0 It's a hard= ware problem, but it does have a software fix.=C2=A0 But that fix must have= been left out of recent meta-bbb builds.=C2=A0 I believe previous fixes ha= ve been something like this patch ( https://github.com/RobertCNelson/bb-ker= nel/blob/607ae2e36477357a4bb222f285fd7460d5230ab9/patches/net/0009-cpsw-sea= rch-for-phy.patch ).=C2=A0 That old patch targets the 3.15 kernel and I bel= ieve Gatesgarth is using 5.10.=C2=A0 Should I expect that patch to work unm= odified on 5.10?=C2=A0 I don't know low level kernel mechanics well enough = to understand what it's really doing.=C2=A0 If that patch won't work, does = anyone know how I could proceed to get ethernet working on the Beaglebone B= lack with current versions of Yocto? Dave --sYL5DjBOmP45TVSr6MFU Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable I have been using a Beaglebone Black for a project for years.  I recen= tly upgraded from Dunfell to Gatesgarth and again began experiencing a prob= lem with the ethernet interface failing to come online 10% of the time, a p= roblem which can only be fixed by a power cycle (not a reboot).  This = is a well known problem documented by this thread going bac= k over 7 years.  It's a hardware problem, but it does have a software = fix.  But that fix must have been left out of recent meta-bbb builds.&= nbsp; I believe previous fixes have been something like this patch.  That old patch targets the 3.15 kernel and = I believe Gatesgarth is using 5.10.  Should I expect that patch to wor= k unmodified on 5.10?  I don't know low level kernel mechanics well en= ough to understand what it's really doing.  If that patch won't work, = does anyone know how I could proceed to get ethernet working on the Beagleb= one Black with current versions of Yocto?

Dave --sYL5DjBOmP45TVSr6MFU--