[PATCH v7 7/7] mtd: ubi: provide NVMEM layer over UBI volumes

[Miquel Raynal]

Hi Daniel,

daniel at makrotopia.org wrote on Tue, 19 Dec 2023 02:33:48 +0000:

> In an ideal world we would like UBI to be used where ever possible on a
> NAND chip. And with UBI support in ARM Trusted Firmware and U-Boot it
> is possible to achieve an (almost-)all-UBI flash layout. Hence the need
> for a way to also use UBI volumes to store board-level constants, such
> as MAC addresses and calibration data of wireless interfaces.
> 
> Add UBI volume NVMEM driver module exposing UBI volumes as NVMEM
> providers. Allow UBI devices to have a "volumes" firmware subnode with
> volumes which may be compatible with "nvmem-cells".
> Access to UBI volumes via the NVMEM interface at this point is
> read-only, and it is slow, opening and closing the UBI volume for each
> access due to limitations of the NVMEM provider API.

I don't feel qualified enough to review the other patches, however this
one looks good to me.

Thanks,
Miquèl