From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] usb: fix usb start problem with SMSC USB hub and Toshiba USB stick
Date: Wed, 22 Sep 2010 16:50:08 +0200 [thread overview]
Message-ID: <m21v8lvnmn.fsf@ohwell.denx.de> (raw)
In-Reply-To: <899533205.349626.1285022229052.JavaMail.fmail@mwmweb063> (devzero@web.de's message of "Tue, 21 Sep 2010 00:37:09 +0200 (CEST)")
Hi Roland,
> i`m spending more than half of this evening with this issue, trying to
> find a solution and trying to provide information for a problem
> affecting many people and which seems to exist in u-boot.
Rest assured that many people on this list spend multiple days with USB
problems :|
> so please forgive if i jumped onto the wrong thread as an entry point
> and i helter-skelter blundered into this list. will go whine elsewhere
> then and use obscure workarounds for this issue instead ( like that
> guy on this thread:
> http://openplug.org/plugforum/index.php?topic=131.0 )
The guy doing a reboot when it fails? Actually not a bad strategy. It
shows once more that USB has the tendency to be non-deterministic.
As always, it would be good to first find out if the codebase of the
U-Boot you use is comparable to mainline (otherwise we cannot use _any_
tests you do) and then do systematic tests to narrow down the problem.
It may well be that USB has been tested better in U-Boot context with
USB sticks (solid state) rather than mechainically spinning hard disks.
Maybe this is something which needs to be taken into account in the
code.
Keep us posted.
Cheers
Detlev
--
Basically, Barnes & Noble separates things by how old they are -- current
stuff is "Fiction", stuff from 20 years ago is "Literature", stuff from 100
years ago is "Classics", stuff from 400 years ago is "Shakespeare" [..] and
stuff from 2000 years ago is "History".
-- James "Kibo" Parry in <kibo-1207032212000001@10.0.1.2>
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de
next prev parent reply other threads:[~2010-09-22 14:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-20 20:46 [U-Boot] [PATCH] usb: fix usb start problem with SMSC USB hub and Toshiba USB stick Roland Kletzing
2010-09-20 21:19 ` Wolfgang Denk
2010-09-20 22:37 ` devzero at web.de
2010-09-21 6:40 ` Wolfgang Denk
2010-09-22 14:50 ` Detlev Zundel [this message]
2010-09-22 16:03 ` devzero at web.de
2010-09-23 9:24 ` Detlev Zundel
2010-09-23 20:16 ` Roland Kletzing
2010-09-24 9:41 ` Detlev Zundel
2010-09-26 9:56 ` Roland Kletzing
2010-09-28 14:42 ` Detlev Zundel
-- strict thread matches above, loose matches on Subject: below --
2010-08-31 18:45 Anatolij Gustschin
2010-09-01 8:49 ` Remy Bohmer
2010-10-23 19:54 ` Wolfgang Denk
2010-10-27 13:05 ` Anatolij Gustschin
2010-10-29 13:57 ` Remy Bohmer
2010-10-29 14:23 ` Anatolij Gustschin
2010-10-12 20:33 ` Wolfgang Denk
2010-10-13 10:04 ` Remy Bohmer
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