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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] U-Boot Timer Qualification
Date: Wed, 22 Apr 2009 23:28:16 +0200	[thread overview]
Message-ID: <20090422212816.GA18705@game.jcrosoft.org> (raw)
In-Reply-To: <20090422210835.B1EB583420E8@gemini.denx.de>

On 23:08 Wed 22 Apr     , Wolfgang Denk wrote:
> Dear Jean-Christophe PLAGNIOL-VILLARD,
> 
> In message <20090422204936.GB29252@game.jcrosoft.org> you wrote:
> > 
> > 	For all Timer modification a minimun of qualification is mandatory
> > 	as it will impact a lots of part of u-boot.
> 
> Maybe you could be so kind and explain what this is actually about?
> 
> Who needs this, and why and when, and why didn't we need it the past?
a lot of actual timer are not correct and we have problem on network timeout
as example.

So we need to known the precision of the timer to known the impact on all
timer depends part of u-boot as timeout or bitbanging stack

so when you have to respect some delay to init some chip or other you will to
known the delay you will have in reality. This will avoid you a lots of pain
during the dev

Best Regards,
J.

  reply	other threads:[~2009-04-22 21:28 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-22 20:49 [U-Boot] U-Boot Timer Qualification Jean-Christophe PLAGNIOL-VILLARD
2009-04-22 21:08 ` Wolfgang Denk
2009-04-22 21:28   ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2009-04-22 22:18     ` Wolfgang Denk
2009-04-23  8:01       ` Ladislav Michl
2009-04-23 14:52         ` [U-Boot] IRC log?, was: " Dirk Behme
2009-04-27 19:28         ` [U-Boot] " Mike Frysinger
2009-04-28 10:08           ` Ladislav Michl
2009-04-28 12:48             ` Mike Frysinger
2009-04-28 13:41               ` Wolfgang Denk
2009-04-28 15:53                 ` Mike Frysinger
2009-04-28 15:11               ` Ladislav Michl
2009-04-28 17:47                 ` Wolfgang Denk
2009-04-29 16:48                   ` Dirk Behme
2009-04-29 18:00                     ` Wolfgang Denk
2009-04-29 19:26                   ` Jean-Christophe PLAGNIOL-VILLARD
2009-04-29 22:21                     ` Wolfgang Denk
2009-04-27 19:42 ` Mike Frysinger

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