diff --git a/lib/psci/psci_private.h b/lib/psci/psci_private.h
index 72bd6bd..61bd966 100644
--- a/lib/psci/psci_private.h
+++ b/lib/psci/psci_private.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2022, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -47,6 +47,9 @@
  */
 #define PSCI_MAX_CPUS_INDEX	0xFFFFU
 
+/* Invalid parent */
+#define PSCI_PARENT_NODE_INVALID	0xFFFFFFFFU
+
 /*
  * Helper functions to get/set the fields of PSCI per-cpu data.
  */