dt: add helper for phandle enumeration

This patch adds a helper to search for a node's phandle by its path. This
is especially useful when the phandle is part of an array, not just a single
cell in which case qemu_devtree_setprop_phandle would be the easy choice.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/device_tree.h b/device_tree.h
index 754bd2b2ec..36fc9dbede 100644
--- a/device_tree.h
+++ b/device_tree.h
@@ -25,6 +25,7 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path,
 int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
                                  const char *property,
                                  const char *target_node_path);
+uint32_t qemu_devtree_get_phandle(void *fdt, const char *path);
 int qemu_devtree_nop_node(void *fdt, const char *node_path);
 int qemu_devtree_add_subnode(void *fdt, const char *name);