[U-Boot-Users] [PATCH] TQM85xx: NAND support via local bus UPMB

[Wolfgang Grandegger <wg@grandegger.com>]

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.