Introudce fdt_get_child_count for get the number of subnodes of
one parent node.
Signed-off-by: Peng Fan <van.free...@gmail.com>
Cc: Simon Glass <s...@chromium.org>
---
include/libfdt.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/libfdt.h b/include/libfdt.h
index e48c21a..94d29e6 100644
--- a/include/libfdt.h
+++ b/include/libfdt.h
@@ -193,6 +193,24 @@ int fdt_next_subnode(const void *fdt, int offset);
node >= 0; \
node = fdt_next_subnode(fdt, node))
+/**
+ * fdt_get_child_count() - get the number of subnodes of one node
+ *
+ * @fdt: FDT blob
+ * @node: Offset of node
+ * @return number of child nodes of node, or 0 if there is no subnode.
+ */
+static inline int fdt_get_child_count(void *fdt, int node)
+{
+ int subnode;
+ int num = 0;
+
+ fdt_for_each_subnode(fdt, subnode, node)
+ num++;
+
+ return num;
+}
+
/**********************************************************************/
/* General functions */
/**********************************************************************/
--
2.6.2
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