diff --git a/include/dt-bindings/soc/qcom,ipcc.h b/include/dt-bindings/soc/qcom,ipcc.h
index 2926cdb4cb48..c0c727396ebd 100644
--- a/include/dt-bindings/soc/qcom,ipcc.h
+++ b/include/dt-bindings/soc/qcom,ipcc.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef __DT_BINDINGS_QCOM_IPCC_H
@@ -8,6 +8,7 @@
 
 /* Signal IDs for MPROC protocol */
 #define IPCC_MPROC_SIGNAL_GLINK_QMP	0
+#define IPCC_MPROC_SIGNAL_TZ		1
 #define IPCC_MPROC_SIGNAL_SMP2P		2
 #define IPCC_MPROC_SIGNAL_PING		3
 #define IPCC_MPROC_SIGNAL_MAX		4 /* Used by driver only */