diff options
Diffstat (limited to 'common/fdt_support.c')
| -rw-r--r-- | common/fdt_support.c | 26 |
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; |