From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Mon, 8 Jun 2009 18:48:50 +0200 Subject: [U-Boot] [PATCH] mpc512x: Fix problem with I2C access before relocation In-Reply-To: <20090608102501.A8037832E416@gemini.denx.de> References: <1244446687-11316-1-git-send-email-sr@denx.de> <20090608102501.A8037832E416@gemini.denx.de> Message-ID: <200906081848.50593.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 Wolfgang, On Monday 08 June 2009 12:25:01 Wolfgang Denk wrote: > > This is needed for the upcoming esd MECP5123 board port which uses I2C > > EEPROM for environment storage. > > Stefan, please check if this is really what you want to do. > Environmentin EEPROM is *strongly* discouraged. It is slow like hell, > and even more unreliable. Do *not* do this. Check if you can use any > other storage - NOR or NAND flash, or the like. I know that EEPROM has some disadvantages. But this is not my choice but the customers (esd) decision. esd has used I2C EEPROM for environment storage for a long time and even included write-protection to the EEPROM. 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 =====================================================================