1 files changed, 37 insertions, 1 deletions
diff --git a/include/libfdt.h b/include/libfdt.h
index fc7f75b..c5ec2ac 100644
--- a/include/libfdt.h
+++ b/include/libfdt.h
@@ -136,6 +136,28 @@ uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
 
 int fdt_next_node(const void *fdt, int offset, int *depth);
 
+/**
+ * fdt_first_subnode() - get offset of first direct subnode
+ *
+ * @fdt:	FDT blob
+ * @offset:	Offset of node to check
+ * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+int fdt_first_subnode(const void *fdt, int offset);
+
+/**
+ * fdt_next_subnode() - get offset of next direct subnode
+ *
+ * After first calling fdt_first_subnode(), call this function repeatedly to
+ * get direct subnodes of a parent node.
+ *
+ * @fdt:	FDT blob
+ * @offset:	Offset of previous subnode
+ * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
+ * subnodes
+ */
+int fdt_next_subnode(const void *fdt, int offset);
+
 /**********************************************************************/
 /* General functions                                                  */
 /**********************************************************************/
@@ -582,7 +604,7 @@ const char *fdt_get_alias_namelen(const void *fdt,
  * value of the property named 'name' in the node /aliases.
  *
  * returns:
- *	a pointer to the expansion of the alias named 'name', of it exists
+ *	a pointer to the expansion of the alias named 'name', if it exists
  *	NULL, if the given alias or the /aliases node does not exist
  */
 const char *fdt_get_alias(const void *fdt, const char *name);
@@ -816,6 +838,20 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
 int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
 				  const char *compatible);
 
+/**
+ * fdt_stringlist_contains - check a string list property for a string
+ * @strlist: Property containing a list of strings to check
+ * @listlen: Length of property
+ * @str: String to search for
+ *
+ * This is a utility function provided for convenience. The list contains
+ * one or more strings, each terminated by \0, as is found in a device tree
+ * "compatible" property.
+ *
+ * @return: 1 if the string is found in the list, 0 not found, or invalid list
+ */
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
+
 /**********************************************************************/
 /* Write-in-place functions                                           */
 /**********************************************************************/