Messages in this thread | | | Date | Fri, 13 May 2022 18:09:39 +0200 | Subject | Re: [PATCH] mtd: spi-nor: Support Dual and Quad Read on Macronix mx25u25635f | From | Alexander Sverdlin <> |
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Hello Michael,
>> According to datasheet both Dual and Quad Read is supported. The read test >> shows x3.8 speed gain. > > Does it have SFDP? Try adding PARSE_SFDP instead of the > NO_SFDP_FLAGS.
Some issues with its SFDP were known: https://patchwork.ozlabs.org/project/linux-mtd/patch/1492068234-9509-1-git-send-email-dev@kresin.me/
> Please post an SFDP dump of this flash [1].
>xxd -p /sys/bus/spi/devices/spi0.0/sfdp 53464450060102ff00060110300000ffc2000104100100ff84000102c000 00ffffffffffffffffffffffffffffffffffe520fbffffffff0f44eb086b 083b04bbfeffffffffff00ffffff44eb0c200f5210d800ff8749b50082d2 04d24403673830b030b0f7bdd55c4a9e29fff050f985ffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffff7f8fffff215cdcffffffffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffff002050169df9c06485cbffffffffffff
>md5sum /sys/bus/spi/devices/spi0.0/sfdp bc360997e729ce1f77f1ff728621d94f /sys/bus/spi/devices/spi0.0/sfdp
>cat /sys/bus/spi/devices/spi0.0/jedec_id c22539
>cat /sys/bus/spi/devices/spi0.0/partname mx25u25635f
>cat /sys/bus/spi/devices/spi0.0/manufacturer macronix
-- Best regards, Alexander Sverdlin.
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