From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 213-239-205-147.clients.your-server.de ([213.239.205.147] helo=debian.tglx.de) by canuck.infradead.org with esmtp (Exim 4.42 #1 (Red Hat Linux)) id 1CKCnT-0001uA-8C for linux-mtd@lists.infradead.org; Wed, 20 Oct 2004 05:30:20 -0400 From: Thomas Gleixner To: marcus@mikolaiczyk.de In-Reply-To: References: Content-Type: text/plain Message-Id: <1098264118.12223.1468.camel@thomas> Mime-Version: 1.0 Date: Wed, 20 Oct 2004 11:21:58 +0200 Content-Transfer-Encoding: 7bit Cc: linux-mtd@lists.infradead.org Subject: Re: 16Bit Bus with 8 Bit NAND? Reply-To: tglx@linutronix.de List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2004-10-20 at 10:52, marcus@mikolaiczyk.de wrote: > Hi everybody, > I'm new to the embedded technologie and have a question concerning a setup > that uses the Infineon TC1130 (Microcontroller) together with NAND Flash. > > The situation is that the TC1130 has an 16Bit EBU (External Bus Unit) to > connect to Flash, Disc On Chip, etc. devices. We disscuss the usage of 8 > bit NAND Flash and realy don't have a clue if it's a problem that the bus > reads 16 Bit from an 8 Bit NAND. > The question is, what setup should be used to get this with Linux > working. > 1. Does the Kernel (theh NAND Driver) automatically detect this and > 'ignores' the 'empty 8 bit? It might work, but it's not a big deal to fix it. > 2. Or is it somehow configruable in the Driver befor comilation? When it's fixed, it will be a option from the baord driver > 3. Or should we use 2 8bit NAND so that we've got 16bit - and is this > supported in the NAND Driver? The 2 parallel 8bit NAND is not supported yet. Is a bit of work though. But why don't you use 16bit NAND ? tglx