From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 2/13] tg3: 5784 / 5764 GPHY power down fix Date: Mon, 12 Nov 2007 21:08:20 -0800 (PST) Message-ID: <20071112.210820.180509998.davem@davemloft.net> References: <1194655120.5745.264.camel@teletran1> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, andy@greyhouse.net, mchan@broadcom.com To: mcarlson@broadcom.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:44134 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750853AbXKMFIU (ORCPT ); Tue, 13 Nov 2007 00:08:20 -0500 In-Reply-To: <1194655120.5745.264.camel@teletran1> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: "Matt Carlson" Date: Fri, 09 Nov 2007 16:38:40 -0800 > 5784 and 5764 devices fail to link / pass traffic after one load / > unload cycle. This happens because of a hardware bug in the new CPMU. > During normal operation, the MAC depends on the PHY clock being > available. When the PHY is powered down, the clock the MAC depends on > is disabled. The fix is to switch the MAC clock to an alternate source > before powering down the PHY, and to restore the MAC clock to the PHY > source upon device resume. > > Signed-off-by: Matt Carlson > Signed-off-by: Michael Chan Applied, thanks Matt.