[PATCH v4 3/7] mtd: spi-nor: sfdp: expose the SFDP as a read-only NVMEM device

[Takahiro.Kuwano at infineon.com]

Hi,

> Register the cached SFDP as a read-only NVMEM device rooted at the
> flash's "sfdp" child node, exposing it in on-flash byte order. This lets
> NVMEM cells reference any SFDP data: a fixed-layout for parameters at a
> known offset, or an nvmem-layout parser for vendor data whose location
> must be discovered at runtime. The device is only registered when an
> "sfdp" node is present in the device tree.
> 
> Signed-off-by: Manikandan Muralidharan <manikandan.m at microchip.com>

SFDP is exposed in sysfs (e.g., /sys/bus/spi/devices/spi0.0/spi-nor/sfdp).
Why don't you just use this existing entry?

Thanks,
Takahiro