dt: add helper for phandle references
Phandles are the fancy device tree name for "pointer to another node".
To create a phandle property, we most likely want to reference to the
node we're pointing to by its path. So create a helper that allows
us to do so.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
diff --git a/device_tree.c b/device_tree.c
index 94a239e..2905f9a 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -132,6 +132,14 @@
return r;
}
+int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
+ const char *property,
+ const char *target_node_path)
+{
+ uint32_t phandle = fdt_get_phandle(fdt, findnode_nofail(fdt, target_node_path));
+ return qemu_devtree_setprop_cell(fdt, node_path, property, phandle);
+}
+
int qemu_devtree_nop_node(void *fdt, const char *node_path)
{
int r;