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-rw-r--r--common/fdt_support.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 175d59e..6a5b27a 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -44,6 +44,32 @@ struct fdt_header *fdt;
/********************************************************************/
+/**
+ * fdt_find_and_setprop: Find a node and set it's property
+ *
+ * @fdt: ptr to device tree
+ * @node: path of node
+ * @prop: property name
+ * @val: ptr to new value
+ * @len: length of new property value
+ * @create: flag to create the property if it doesn't exist
+ *
+ * Convenience function to directly set a property given the path to the node.
+ */
+int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
+ const void *val, int len, int create)
+{
+ int nodeoff = fdt_find_node_by_path(fdt, node);
+
+ if (nodeoff < 0)
+ return nodeoff;
+
+ if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
+ return 0; /* create flag not set; so exit quietly */
+
+ return fdt_setprop(fdt, nodeoff, prop, val, len);
+}
+
int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;