[PATCH] MTD for Taco

Sean MacLennan smaclennan at pikatech.com
Mon Jan 14 15:55:21 EST 2008

Stefan Roese wrote:
>> +#ifdef CONFIG_TACO
>> +/* The NDFC may allow 32bit read/writes, but it sure doesn't work on
>> + * the taco!
>> + */
> We definitely don't want to see such board specific stuff in the common
> NDFC driver. And I really doubt that you need this change for your board.
> We are using this ndfc driver on multiple boards, and all have no
> problems accessing the controller with 32bit read/writes. So you most
> likely have a problem with your board port. Perhaps something with
> with the EBC setup. Please re-check and compare with boards that are know
> to work, like Sequoia.
How about adding a config option that lets you specify 8 bit access? 
Something like CONFIG_NDFC_8BIT_ACCESS. We could default it to no and 
put a little blurb that says something like:

On some platforms the 32bit read/writes cause a machine access 
exception. If you get a machine access exception while reading the NAND 
bad block table, try turning on 8 bit access.


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