[PATCH] mtd: m25p80: add support for Spansion s25fl128s chip

Brian Norris computersforpeace at gmail.com
Wed Dec 4 21:51:01 EST 2013


On Wed, Dec 4, 2013 at 6:20 PM, Huang Shijie <b32955 at freescale.com> wrote:
> On Wed, Dec 04, 2013 at 03:58:31PM -0800, Brian Norris wrote:
>>
>> BTW, if we update m25p80 to use 6th-byte READID, we need to double-check
>> the entries that currently use the 5-byte ID string, so they don't break
>> if we extend them implicitly.
> yes, i think we should read out more bytes of the ID.
>
> Is there any NOR that can only read out 5bytes, and can not be read out 6 bytes?

I doubt it. But I wasn't talking about "can we read 6 bytes?", but
rather "what happens when we compare 6 bytes of ID with the 5 byte IDs
in the table?". We'll have a mixture of 3-byte, 5-byte and 6-byte IDs
in our table, and we need to be careful to match properly.

Brian



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