dm: util: Add a livetree equivalent API of dm_fdt_pre_reloc()
This adds a new API dm_ofnode_pre_reloc(), a livetree equivalent
API of dm_fdt_pre_reloc().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/util.h b/include/dm/util.h
index 898822e..9ff6531 100644
--- a/include/dm/util.h
+++ b/include/dm/util.h
@@ -55,7 +55,7 @@
* There are 3 settings currently in use
* -
* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
- * Existing platforms only use it to indicate nodes needee in
+ * Existing platforms only use it to indicate nodes needed in
* SPL. Should probably be replaced by u-boot,dm-spl for
* existing platforms.
* @blob: devicetree
@@ -65,4 +65,29 @@
*/
bool dm_fdt_pre_reloc(const void *blob, int offset);
+/**
+ * Check if an of node should be or was bound before relocation.
+ *
+ * Devicetree nodes can be marked as needed to be bound
+ * in the loader stages via special devicetree properties.
+ *
+ * Before relocation this function can be used to check if nodes
+ * are required in either SPL or TPL stages.
+ *
+ * After relocation and jumping into the real U-Boot binary
+ * it is possible to determine if a node was bound in one of
+ * SPL/TPL stages.
+ *
+ * There are 3 settings currently in use
+ * -
+ * - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
+ * Existing platforms only use it to indicate nodes needed in
+ * SPL. Should probably be replaced by u-boot,dm-spl for
+ * existing platforms.
+ * @node: of node
+ *
+ * Returns true if node is needed in SPL/TL, false otherwise.
+ */
+bool dm_ofnode_pre_reloc(ofnode node);
+
#endif