From: David Woodhouse <dwmw2@infradead.org>
To: Rick van Rein <rick@groengemak.nl>
Cc: linux-mtd@lists.infradead.org
Subject: Re: Flash I/O not enabled in MSR_DIVIL_BALL_OPTS
Date: Sat, 05 Dec 2009 21:05:35 +0000 [thread overview]
Message-ID: <1260047135.17440.133.camel@macbook.infradead.org> (raw)
In-Reply-To: <20091205174702.GA3240@phantom.vanrein.org>
On Sat, 2009-12-05 at 17:47 +0000, Rick van Rein wrote:
> David,
>
> > If you have the NAND hardware connected, then surely your firmware ought
> > to be setting the MSRs appropriately?
>
> I broken open a bit more hardware and found an ATA-to-flash interface
> between companion chip and flashes. Sigh, instead of 100 MB/s I am now
> limited to 2.4 MB/s and cannot employ this wonderful direct-NAND-stuff.
The NAND controller on the Geode is only capable of about 3.5MiB/s
anyway. There's a reason we put a new NAND flash controller on OLPC.
--
dwmw2
prev parent reply other threads:[~2009-12-05 21:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-30 8:40 Flash I/O not enabled in MSR_DIVIL_BALL_OPTS Rick van Rein
2009-12-02 18:11 ` David Woodhouse
2009-12-05 17:47 ` Rick van Rein
2009-12-05 21:05 ` David Woodhouse [this message]
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