diff options
Diffstat (limited to 'src/lib/device_tree.c')
| -rw-r--r-- | src/lib/device_tree.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/lib/device_tree.c b/src/lib/device_tree.c index 0a88c1f886..de14c15536 100644 --- a/src/lib/device_tree.c +++ b/src/lib/device_tree.c @@ -725,6 +725,28 @@ struct device_tree_node *dt_find_prop_value(struct device_tree_node *parent, return NULL; } +/** + * Find the phandle of a node. + * + * @param node Pointer to node containing the phandle + * @return Zero on error, the phandle on success + */ +uint32_t dt_get_phandle(struct device_tree_node *node) +{ + uint32_t *phandle; + size_t len; + + dt_find_bin_prop(node, "phandle", (void **)&phandle, &len); + if (phandle != NULL && len == sizeof(*phandle)) + return be32_to_cpu(*phandle); + + dt_find_bin_prop(node, "linux,phandle", (void **)&phandle, &len); + if (phandle != NULL && len == sizeof(*phandle)) + return be32_to_cpu(*phandle); + + return 0; +} + /* * Write an arbitrary sized big-endian integer into a pointer. * |