From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gateway.heeltoe.com (gateway.heeltoe.com [66.134.219.32]) by ozlabs.org (Postfix) with ESMTP id 00A53DDED8 for ; Sun, 22 Jul 2007 11:19:18 +1000 (EST) Received: from mwave.heeltoe.com (mwave [192.245.4.20]) by gateway.heeltoe.com (Postfix) with ESMTP id 72AF311409C for ; Sat, 21 Jul 2007 20:51:13 -0400 (EDT) Received: from mwave.heeltoe.com (localhost.localdomain [127.0.0.1]) by mwave.heeltoe.com (8.12.11.20060308/8.12.11) with ESMTP id l6M0pDRQ010980 for ; Sat, 21 Jul 2007 20:51:13 -0400 Received: from mwave (brad@localhost) by mwave.heeltoe.com (8.12.11.20060308/8.12.11/Submit) with ESMTP id l6M0pDsU010976 for ; Sat, 21 Jul 2007 20:51:13 -0400 Message-Id: <200707220051.l6M0pDsU010976@mwave.heeltoe.com> From: Brad Parker To: linuxppc-dev@ozlabs.org Subject: 8247 ether_fcc underruns, but only running kernel Date: Sat, 21 Jul 2007 20:51:13 -0400 Sender: brad@heeltoe.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , I have an 8247 which when running u-boot works fine on ethernet, both 10mb and 100mb. It can dhcp and load a kernel. But when I boot the kernel (2.4 or 2.6) the fcc transmits get an underrun everytime. Packets are received fine. This is on FCC1. (I'd suspect the tx clock, but ethernet is ok with u-boot. I double checked the clock configs under linux.) Does this ring a bell with anyone? I started out with rstconf# grounded, (i.e. default speeds), but i also tried both the cpu and cpm at 166mhz. Both acted the same. I've no doubt got something misconfigured, but what... I've tried different BCR settings. -brad