From: Jeroen Hofstee <jeroen@myspectrum.nl>
To: u-boot@lists.denx.de
Subject: [U-Boot] AM335x: enabling datacache in SPL slows down system?
Date: Fri, 21 Jun 2013 20:46:47 +0200 [thread overview]
Message-ID: <51C49F97.10300@myspectrum.nl> (raw)
In-Reply-To: <20130621053330.B7CC8380BF2@gemini.denx.de>
Hello Wolfgang,
On 06/21/2013 07:33 AM, Wolfgang Denk wrote:
> We observed the very same issue with the verry first prototype
> implementation of Falcon mode on an AM3517 based board. [..]
For the am3517 the only thing needed is to add SRAM
to the known memory. See [1], that should change the
cache misses (which likely cause the extra delays) to
actual caches. U-boot only adds the detected memory
and since U-boot is running from DRAM and SPL is not,
the difference seems obvious.
Regards,
Jeroen
[1] http://lists.denx.de/pipermail/u-boot/2013-June/156949.html
next prev parent reply other threads:[~2013-06-21 18:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 8:05 [U-Boot] AM335x: enabling datacache in SPL slows down system? Bas van den Berg
2013-06-20 18:51 ` Jeroen Hofstee
2013-06-21 5:33 ` Wolfgang Denk
2013-06-21 18:46 ` Jeroen Hofstee [this message]
2013-06-21 18:56 ` Tom Rini
2013-06-24 8:01 ` Bas van den Berg
2013-06-24 18:17 ` Jeroen Hofstee
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