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From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/2] HACK: arndale: deinit scsi before launching Linux
Date: Wed, 08 Oct 2014 10:18:03 +0200	[thread overview]
Message-ID: <20141008081803.F16E438352D@gemini.denx.de> (raw)
In-Reply-To: <1412690200-6630-2-git-send-email-ijc@hellion.org.uk>

Dear Ian Campbell,

In message <1412690200-6630-2-git-send-email-ijc@hellion.org.uk> you wrote:
> From: Ian Campbell <ian.campbell@citrix.com>
> 
> NOT TO BE APPLIED AS IS
> 
> Without this Linux fails to correctly init the phy (or something) and cannot
> detect the disk.
> 
> Even with this we can fail to detect the disk outselves on some fraction of
> boots, so something else is clearly up too.

Why does the Subject: say "scsi" when you actually mean SATA?

Note that this is a bug fix.  U-Boot should _always_ shut down all
peripherals it used before booting an OS, see [1]

[1] http://www.denx.de/wiki/U-Boot/DesignPrinciples

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
If you want strict real-time behavior, run in the real  time  schedu-
ling class.  But there are no seatbelts or airbags;  main(){for(;;);}
can hard hang your system.                          -- Bart Smaalders

  reply	other threads:[~2014-10-08  8:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-07 13:56 [U-Boot] [PATCH RFC 0/2] u-boot: arndale: Support for SATA controller Ian Campbell
2014-10-07 13:56 ` [U-Boot] [PATCH 1/2] exynos5250/arndale: Enable SATA/AHCI support Ian Campbell
2014-10-26  7:27   ` Minkyu Kang
2014-10-29 10:34     ` Ian Campbell
2014-10-29 14:09       ` Minkyu Kang
2014-10-07 13:56 ` [U-Boot] [PATCH 2/2] HACK: arndale: deinit scsi before launching Linux Ian Campbell
2014-10-08  8:18   ` Wolfgang Denk [this message]
2014-10-09  7:40     ` Ian Campbell

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