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dm: Add support for handling old u-boot,dm- tags

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Add a CONFIG option to deal with this automatically, printing a warning
when U-Boot starts up. This can be useful if the device tree comes from
another project.

We will maintain this through the 2023.07 release, providing 6 months
for people to notice.

Signed-off-by: Simon Glass <sjg@chromium.org>
Version 4:
Acked-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Simon Glass
2023-02-13 08:56:32 -07:00
parent 7703efbc99
commit c74e03417b
5 changed files with 50 additions and 6 deletions
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7
common/board_r.c
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@@ -569,6 +569,13 @@ static int dm_announce(void)
printf("Warning: Unexpected devicetree source (not from a prior stage)");
printf("Warning: U-Boot may not function properly\n");
}
if (IS_ENABLED(CONFIG_OF_TAG_MIGRATE) &&
(gd->flags & GD_FLG_OF_TAG_MIGRATE))
/*
* U-Boot will silently fail to work after 2023.07 if
* there are old tags present
*/
printf("Warning: Device tree includes old 'u-boot,dm-' tags: please fix by 2023.07!\n");
}
return 0;