[PATCH v3 2/5] mtd: spi-nor: core: Hook manufacture by checking first byte ID

Michael Walle mwalle at kernel.org
Mon Sep 4 07:54:40 PDT 2023


Hi,

>> Most of information could get by parsing SFDP.
>> We hope that highest protocol(8D-8D-8D) could used without adding IDs.
>> Because of octal_dtr function is still reply on mafacturer hook 
>> function.
>> So that vendor discovery could make up deficiency.
> 
> For this part, have any ideas?
> We hope that we could do something for reducing reliability of ID 
> table.
> It will be good if new flashes could get all features without comparing 
> flash id
> on ID tables.

Ahh, that was the use case for that. I suggest you look into the SCCR 
SFDP
tables. You should get everything from the 23rd DWORD. At least the 
Application
note you've sent me, shows these values are populated and by a brief 
look
it seems to match your hand written code in patch 1. Which means you 
don't
need any code in macronix.c. Instead you should extend the SCCR parser.

-michael



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