From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anton Vorontsov Date: Wed, 16 Sep 2009 21:00:37 +0400 Subject: [U-Boot] No NAND device found!!! Freescale MPC8544+SAMSUNG 1GB Nand Flash , please help! In-Reply-To: <9bf601f70909160855k3881538p9820973e7e2c2641@mail.gmail.com> References: <25455541.post@talk.nabble.com> <25462282.post@talk.nabble.com> <9bf601f70909160855k3881538p9820973e7e2c2641@mail.gmail.com> Message-ID: <20090916170037.GA16208@oksana.dev.rtsoft.ru> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wed, Sep 16, 2009 at 11:55:12PM +0800, Bin Meng wrote: > On Wed, Sep 16, 2009 at 5:40 AM, duckycool 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