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libfdt: Export overlay_apply_node() as fdt_overlay_apply_node()

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This function is useful to merge a subset of DT into another DT, for
example if some prior-stage firmware passes a DT fragment to U-Boot
and U-Boot needs to merge it into its own DT. Export this function
to permit implementing such functionality.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
This commit is contained in:
Marek Vasut
2020-04-11 20:43:07 +02:00
parent c2279d784e
commit c1bde2378a
2 changed files with 12 additions and 0 deletions
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5
scripts/dtc/libfdt/fdt_overlay.c
View File

@@ -879,3 +879,8 @@ err:
return ret; return ret;
} }
int fdt_overlay_apply_node(void *fdt, int target, void *fdto, int node)
{
return overlay_apply_node(fdt, target, fdto, node);
}

7
scripts/dtc/libfdt/libfdt.h
View File

@@ -2032,6 +2032,13 @@ int fdt_del_node(void *fdt, int nodeoffset);
*/ */
int fdt_overlay_apply(void *fdt, void *fdto); int fdt_overlay_apply(void *fdt, void *fdto);
/**
* fdt_overlay_apply_node - Merges a node into the base device tree
*
* See overlay_apply_node() for details.
*/
int fdt_overlay_apply_node(void *fdt, int target, void *fdto, int node);
/**********************************************************************/ /**********************************************************************/
/* Debugging / informational functions */ /* Debugging / informational functions */
/**********************************************************************/ /**********************************************************************/