[RFC v2 12/20] dm: add tag support

[Simon Glass]

Hi Takahiro,

On Thu, 9 Dec 2021 at 23:58, AKASHI Takahiro <takahiro.akashi at linaro.org> wrote:
>
> With dm-tag feature, any U-Boot subsystem is allowed to associate
> arbitrary number of data with a particular udevice. This can been
> see as expanding "struct udevice" without modifying the definition.
>
> As a first user, UEFI subsystem makes use of tags to associate
> an efi_disk object with a block device.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>  drivers/core/Makefile |   2 +-
>  drivers/core/tag.c    | 162 ++++++++++++++++++++++++++++++++++++++++++
>  include/dm/tag.h      |  76 ++++++++++++++++++++
>  3 files changed, 239 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/core/tag.c
>  create mode 100644 include/dm/tag.h

Needs comments and a test, but looks good.

How does the list itself get inited?

Regards,
Simon