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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH PPC_4xx V3] Print simple row of dots instead of spinning wheel
Date: Fri, 31 Oct 2008 13:06:20 +0100	[thread overview]
Message-ID: <200810311306.20641.sr@denx.de> (raw)
In-Reply-To: <20081031112033.0617A81122D2@gemini.denx.de>

Hi Wolfgang,

On Friday 31 October 2008, Wolfgang Denk wrote:
> > > It is my understanding that a rework of this code is under way  which
> > > will  avoid  the  long delay for the standard boot sequence (and only
> > > need it for board bringup or  intentional  recalibration).
> >
> > Are you talking about storing the optimized autocalibration values in
> > FLASH, as discussed on IRC some time ago? I don't know if somebody is
> > working on
>
> Yes. I see this as a mandatory requirement. The additional delays are
> not aceptable.

I just want to raise some concerns about this approach on boards with DIMM 
modules. Here it will be hard to determine if a new DIMM module is installed. 
Even a module from the same manufacturer and type (size, width etc, all the 
same) will need a new autocalibration. This is probably hard to detect.

Just my $0.02.

Best regards,
Stefan

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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
=====================================================================

  reply	other threads:[~2008-10-31 12:06 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-23 10:59 [U-Boot] [PATCH PPC_4xx V3] Print simple row of dots instead of spinning wheel Wolfgang Denk
2008-10-23 11:08 ` Stefan Roese
2008-10-23 11:17   ` Wolfgang Denk
2008-10-28 23:05   ` Wolfgang Denk
2008-10-27 14:18 ` Matthias Fuchs
2008-10-30 23:19 ` Wolfgang Denk
2008-10-31  7:54   ` Stefan Roese
2008-10-31  8:45     ` Wolfgang Denk
2008-10-31  9:09       ` Stefan Roese
2008-10-31 11:20         ` Wolfgang Denk
2008-10-31 12:06           ` Stefan Roese [this message]
2008-10-31 12:41             ` Jean-Christophe PLAGNIOL-VILLARD

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