From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Grandegger <wg@grandegger.com>
Date: Wed, 28 May 2008 20:38:37 +0200
Subject: [U-Boot-Users] [PATCH] TQM85xx: NAND support via local bus UPMB
In-Reply-To: <20080528182531.GA3308@loki.buserror.net>
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	<1211998349-2117-8-git-send-email-wg@grandegger.com>
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	<1211998349-2117-10-git-send-email-wg@grandegger.com>
	<1211998349-2117-11-git-send-email-wg@grandegger.com>
	<1211998349-2117-12-git-send-email-wg@grandegger.com>
	<20080528182531.GA3308@loki.buserror.net>
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Scott Wood wrote:
> On Wed, May 28, 2008 at 08:12:28PM +0200, Wolfgang Grandegger wrote:
>> This patch adds support for NAND FLASH on the TQM8548. It is disabled by
>> default and can be enabled for the TQM8548 modules. Note that the R/B pin
>> is not supported by that module requiring to use the specified maximum
>> delay time.
>>
>> Note: With NAND support enabled the size of the U-Boot image exceeds
>> 256 KB and TEXT_BASE must therefore be set to 0xfff80000 in config.mk,
>> doubling the image size :-(.
> 
> What does this do differently from the code in drivers/mtd/nand/fsl_upm.c?

Maybe it does not support multi banks on a NAND chip. I have to check.

> How much of this is board-specific?

Well, I already gave drivers/mtd/nand/fsl_upm.c a try but was unable to
get it working on this board. Therefore I decided to keep this known to
work driver which we have already for a while.

With Linux, I had more success.

Wolfgang.