From 431ae8d898b487b6197ed7b5dadbffe0349cb6c1 Mon Sep 17 00:00:00 2001 From: yongari Date: Wed, 29 Jun 2011 17:32:52 +0000 Subject: Document two known hardware errata which requires manual link configuration. Submitted by: Aries Lee (arieslee <> jmicron com) --- share/man/man4/jme.4 | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'share/man/man4/jme.4') diff --git a/share/man/man4/jme.4 b/share/man/man4/jme.4 index 4220ab5..0bcf652 100644 --- a/share/man/man4/jme.4 +++ b/share/man/man4/jme.4 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 20, 2010 +.Dd June 29, 2011 .Dt JME 4 .Os .Sh NAME @@ -178,3 +178,17 @@ address once station address is reprogrammed via eFuse. It is highly recommended not to reprogram station address and it is responsibility of administrator to store original station address into a safe place when station address should be changed. +.Pp +There are two known 1000baseT link establishment issues with JMC25x. +If the full mask revision number of JMC25x controller is less than +or equal to 4 and link partner enabled IEEE 802.3az Energy Efficient +Ethernet feature, the controller would not be able to establish a +1000baseT link. +Also if the length of cable is longer than 120 meters, controller +can not establish a 1000baseT link. +The known workaround for the issue is to force manual link +configuration with 100baseTX instead of relying on auto-negotiation. +The full mask revision number of controller could be checked with +verbose kernel boot option. +Use lower nibble of chip revision number to get full mask revision of +the controller. -- cgit v1.1