From: Jamie Lokier <jamie@shareable.org>
To: Andre Puschmann <andre.puschmann@imms.de>
Cc: Arnaud Mouiche <arnaud.mouiche@thomson.net>,
linux-mtd@lists.infradead.org
Subject: Re: flash read performance
Date: Tue, 4 Nov 2008 11:42:29 +0000 [thread overview]
Message-ID: <20081104114229.GA1673@shareable.org> (raw)
In-Reply-To: <490F096D.5060208@imms.de>
Andre Puschmann wrote:
> Hi,
>
> I spent some more time on this issue and investigated some mtd-maps
> drivers.
> The kernel I am using is a 2.6.21 that comes out of the gumstix
> svn-repo. Unfortunately, it uses a legacy driver which only does a
> ioremap() but no ioremap_nocache(). Patching the driver with this
> additional call boosts up transfers up to around 5.5MB/s, which
> is a fairly improvement.
> I will send a patch to the gumstix list. Users of newer kernel might
> not need this, as they use a newer driver (pxa2xx-flash.c) anyway.
I don't know much about this area, but will _writing_ to the flash
work reliably if ioremap_cached() is used?
-- Jamie
next prev parent reply other threads:[~2008-11-04 11:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-28 10:14 flash read performance Andre Puschmann
2008-10-29 11:42 ` Josh Boyer
2008-10-29 12:03 ` Jamie Lokier
2008-10-29 15:52 ` Andre Puschmann
2008-10-30 8:33 ` Arnaud Mouiche
2008-10-30 9:52 ` Andre Puschmann
2008-10-30 10:06 ` Arnaud Mouiche
2008-11-03 14:23 ` Andre Puschmann
2008-11-04 8:30 ` Andre Puschmann
2008-11-04 11:42 ` Jamie Lokier [this message]
2008-11-04 14:31 ` Andre Puschman
2008-11-07 2:41 ` Trent Piepho
2008-11-07 4:02 ` Jamie Lokier
2008-11-07 5:36 ` Trent Piepho
2008-11-07 5:57 ` Jamie Lokier
2008-11-07 9:47 ` Andre Puschmann
2008-11-08 5:28 ` Trent Piepho
2008-11-11 13:28 ` Andre Puschmann
2008-11-15 2:02 ` Trent Piepho
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