linux-kernel - Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

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Message-ID: <Pine.LNX.4.64.0809191216450.3476@t2.domain.actdsltmp>
Date:	Fri, 19 Sep 2008 12:20:38 -0700 (PDT)
From:	Trent Piepho <tpiepho@...escale.com>
To:	Jared Hulbert <jaredeh@...il.com>
cc:	Jamie Lokier <jamie@...reable.org>, cotte@...ibm.com,
	Greg Ungerer <gerg@...pgear.com>,
	linux-embedded@...r.kernel.org, nickpiggin@...oo.com.au,
	Jörn Engel <joern@...fs.org>,
	Linux-kernel@...r.kernel.org,
	linux-mtd <linux-mtd@...ts.infradead.org>, tim.bird@...sony.com
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

On Mon, 15 Sep 2008, Jared Hulbert wrote:
>>>>> I'm using Spansion MirrorBit S29GL128N, which reads at about 0.6 MByte/s.
>>>
>>> If you are using a GL, you'll probably find our P33 a good fit and at
>>> competitive prices to GL as I understand it.  That's I think 50Mhz.
>>
>> What's a GL?  Never heard of it - all I can think of is OpenGL :-)
>
> S29_GL_128N

I'm using a S29GL064N chip.  Going through linux and /dev/mtd I get 13.5
MB/sec and reading directly from the chips give 15 MB/sec.  I've not mapped
the chip cached and I'm not using the page burst mode.  That would help a lot
certainly, but the current flash speed isn't much of a bottleneck.
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