CONCAT_PROP
if (mtd_is_part_concat(of_parse_phandle(parts, CONCAT_PROP, i)))
item->nodes[i] = of_parse_phandle(parts, CONCAT_PROP, (i - 1));
parts = of_find_node_with_property(parts, CONCAT_PROP);
count = of_count_phandle_with_args(parts, CONCAT_PROP, NULL);