diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index b80891b43816..e0a6514ab46c 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -436,6 +436,7 @@ EXPORT_SYMBOL(of_platform_bus_probe);
  * of_platform_populate() - Populate platform_devices from device tree data
  * @root: parent of the first level to probe or NULL for the root of the tree
  * @matches: match table, NULL to use the default
+ * @lookup: auxdata table for matching id and platform_data with device nodes
  * @parent: parent to hook devices from, NULL for toplevel
  *
  * Similar to of_platform_bus_probe(), this function walks the device tree