diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/global_data.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index 19f70393b45..b6f707e97e5 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -198,13 +198,21 @@ struct global_data { */ struct udevice *dm_root_f; /** - * @uclass_root: head of core tree + * @uclass_root_s: + * head of core tree when uclasses are not in read-only memory. + * + * When uclasses are in read-only memory, @uclass_root_s is not used and + * @uclass_root points to the root node generated by dtoc. */ struct list_head uclass_root_s; /** - * @uclass_root: pointer to head of core tree, if uclasses are in - * read-only memory and cannot be adjusted to use @uclass_root as a - * list head. + * @uclass_root: + * pointer to head of core tree, if uclasses are in read-only memory and + * cannot be adjusted to use @uclass_root as a list head. + * + * When not in read-only memory, @uclass_root_s is used to hold the + * uclass root, and @uclass_root points to the address of + * @uclass_root_s. */ struct list_head *uclass_root; # if CONFIG_IS_ENABLED(OF_PLATDATA) |