From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] No NAND device found!!! Freescale MPC8544+SAMSUNG 1GB Nand Flash , please help!
Date: Wed, 16 Sep 2009 21:00:37 +0400 [thread overview]
Message-ID: <20090916170037.GA16208@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <9bf601f70909160855k3881538p9820973e7e2c2641@mail.gmail.com>
On Wed, Sep 16, 2009 at 11:55:12PM +0800, Bin Meng wrote:
> On Wed, Sep 16, 2009 at 5:40 AM, duckycool <duckycool@gmail.com> wrote:
> >
> > ? Correction, the nand flash is K9F8G08U0M.
> >
>
> K9F8G08U0M is a 4KB page size NAND flash.
> Freescale eLBC NAND flash controller does not support 4KB page size.
MPC8544 doesn't have eLBC, so its LBC can't speak NAND directly,
only via UPM (user-programmable machine). And with UPM we can
support any NAND flashes.
As for the original problem, it could be anything: schematics (I assume
it's custom 8544 board), timings setup (OR/BR), or UPM array problem.
Unfortunately it's hard to debug these sort of things without logic
analyzer, so if you don't have one, I'd suggest to play
'trial & error' game.
Cc'ing Wolfgang Grandegger though, maybe he has better ideas.
--
Anton Vorontsov
email: cbouatmailru at gmail.com
irc://irc.freenode.net/bd2
next prev parent reply other threads:[~2009-09-16 17:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-15 14:55 [U-Boot] No NAND device found!!! Freescale MPC8544+SAMSUNG 1GB Nand Flash , please help! duckycool
2009-09-15 21:40 ` duckycool
2009-09-16 15:55 ` Bin Meng
2009-09-16 16:40 ` duckycool
2009-09-16 17:00 ` Anton Vorontsov [this message]
2009-09-16 23:40 ` duckycool
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