[PATCH 0/9] Support for block device NVMEM providers

[Andrew Lunn]

> Note that this is currently limited to eMMC-backed block devices, as
> only the eMMC core associates a firmware node with the block device
> (add_disk_fwnode). This can be easily extended in the future to
> support additional block drivers.

Would this be

https://elixir.bootlin.com/linux/v7.0.1/source/drivers/mmc/core/block.c#L2641

Looking at that function, mmc_blk_alloc_req() i don't see it doing
anything different between an eMMC and MMC.

An eMMC you don't expect to go away, since it is soldered
down. However an MMC can be ejected. Is the code prepared for that?

      Andrew