RE: [PATCH v3 11/23] mtd: spi-nor: winbond: Add support for W25Q12RV-Q/N

Hi Miquel,

There is an ID collision with the chip of same density from the JV
family. Both chips are very similar in practice, it is mostly a matter
of electrical differences (mostly power consumption being lower).

As a significant difference, RV chips identify themselves as supporting
the new SFDP (rev F) field which forces an alternate write SR2
opcode (0x31).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef4018
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0344eb086b083b42bbfeffffffffff

                          ^^^^^^^^
Just noticed size is wrong like patch #18.
BFPT DWORD2 advertises memory density in bits (0-based).
In 128Mb parts, this should be 0x07FFFFFF.
Need post_bfpt_fixup.

Thanks,
Takahiro