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mtd: spinand: Add support for 5-byte IDs
commit 34a9567 upstream. E.g. ESMT chips will return an identification code with a length of 5 bytes. In order to prevent ambiguity, flash chips would actually need to return IDs that are up to 17 or more bytes long due to JEDEC's continuation scheme. I understand that if a manufacturer ID is located in bank N of JEDEC's database (there are currently 16 banks), N - 1 continuation codes (7Fh) need to be added to the identification code (comprising of manufacturer ID and device ID). However, most flash chip manufacturers don't seem to implement this (correctly). Signed-off-by: Ezra Buehler <ezra.buehler@husqvarnagroup.com> Reviewed-by: Martin Kurbanov <mmkurbanov@salutedevices.com> Tested-by: Martin Kurbanov <mmkurbanov@salutedevices.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20240125200108.24374-2-ezra@easyb.ch Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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