Hi Sascha, Le Fri, 7 Sep 2012 08:57:03 +0200, Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> a écrit : > Hi Eric, > > On Thu, Sep 06, 2012 at 09:39:29PM +0200, Eric Bénard wrote: > > this saves some time during boot when ethernet is not needed in barebox > > Is this really significant on your hardware? I made a measurement here > and the miidev_restart_aneg() takes 130us on an i.MX27 board. > > The original intention of doing it at init time was that autonegotation > is already completed when we actually use the network. And this time > really is significant: > > without the patch: > > barebox@Phytec phyCORE-i.MX27:/ time ping 192.168.23.4 > warning: No MAC address set. Using random address 62:FE:FE:0B:09:A8 > phy0: Link is up - 100/Full > host 192.168.23.4 is alive > time: 10ms > > with the patch: > > barebox@Phytec phyCORE-i.MX27:/ time ping 192.168.23.4 > warning: No MAC address set. Using random address A6:1B:AB:80:FA:E7 > phy0: Link is up - 100/Full > host 192.168.23.4 is alive > time: 2040ms > that strange. I don't see why miidev_restart_aneg() would take less time at boot than at open. Eric _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
