diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst
index 84f4c9d..71051ca 100644
--- a/docs/porting-guide.rst
+++ b/docs/porting-guide.rst
@@ -45,6 +45,9 @@
 
 This document should be read in conjunction with the TF-A `User Guide`_.
 
+Please refer to the `Platform compatibility policy`_ for the policy regarding
+compatibility and deprecation of these porting interfaces.
+
 Common modifications
 --------------------
 
@@ -3082,6 +3085,7 @@
 .. _Firmware Design: firmware-design.rst
 .. _PSCI: http://infocenter.arm.com/help/topic/com.arm.doc.den0022c/DEN0022C_Power_State_Coordination_Interface.pdf
 .. _plat/arm/board/fvp/fvp\_pm.c: ../plat/arm/board/fvp/fvp_pm.c
+.. _Platform compatibility policy: https://github.com/ARM-software/arm-trusted-firmware/docs/platform-compatibility-policy.rst#2platform-compatibility-policy
 .. _IMF Design Guide: interrupt-framework-design.rst
 .. _Arm Generic Interrupt Controller version 2.0 (GICv2): http://infocenter.arm.com/help/topic/com.arm.doc.ihi0048b/index.html
 .. _3.0 (GICv3): http://infocenter.arm.com/help/topic/com.arm.doc.ihi0069b/index.html