[U-Boot] [RFC 1/3] dm: blk: add UCLASS_PARTITION

[Sergey Kubushyn]

On Tue, 29 Jan 2019, AKASHI Takahiro wrote:

My $.25 -- IMHO, block device partitions in Device Tree is _NOT_ a very good
idea.

What if one decided to re-partition his drive? Or just use bigger or smaller
drive? Would he has to re-write DTS file and re-compile everything? And such
change is not something extraordinary, it is a routine action.

IMHO partitions do _NOT_ belong to Block Device. That's what partition
tables are.

It _MIGHT_ make sense for some particular devices such as MTD that don't
have partition tables but _NOT_ for Block Devices in general.

> UCLASS_PARTITION device will be created as a child node of
> UCLASS_BLK device.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>

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