From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Fri, 22 Aug 2008 21:41:16 +0200 Subject: [U-Boot] [PATCH] ppc4xx: AMCC PPC460GT/EX PCI-E de-emphasis adjustment fix In-Reply-To: References: <1219380893-17253-1-git-send-email-fkan@amcc.com> <200808221041.34132.sr@denx.de> Message-ID: <200808222141.16391.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Marri, On Friday 22 August 2008, Tirumala Reddy Marri wrote: > There were silent corruptions I noticed during a RAID-5 test using > silicon image card. Then I hooked up a analyzer and found that eye > diagram was not wide enough. After reducing the de-emphasis value I > noticed better eye diagram. Also I ran 72 hour test which was successful > to see if there are any corruptions . Did you run this on a Canyonlands? If yes, which PCIe slot did you use? > Even though these de-emphasis values are only applicable to Linux. I > wanted to make sure both Linux and u-boot are in sync. Yes, makes perfect sense. I'll push this into my repository later. Thanks. Best regards, Stefan ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de =====================================================================