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diff --git a/docs/firmware-design.md b/docs/firmware-design.md
index 90ce4b1b..52667e2e 100644
--- a/docs/firmware-design.md
+++ b/docs/firmware-design.md
@@ -728,6 +728,11 @@ registered with the generic PSCI code to be supported.
**Note : These PSCI APIs require appropriate Secure Payload Dispatcher
hooks to be registered with the generic PSCI code to be supported.
+The PSCI implementation in ARM Trusted Firmware is a library which can be
+integrated with AArch64 or AArch32 EL3 Runtime Software for ARMv8-A systems.
+A guide to integrating PSCI library with AArch32 EL3 Runtime Software
+can be found [here][PSCI Lib guide].
+
5. Secure-EL1 Payloads and Dispatchers
---------------------------------------
@@ -1923,3 +1928,4 @@ _Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved._
[INTRG]: ./interrupt-framework-design.md
[CPUBM]: ./cpu-specific-build-macros.md
[Firmware Update]: ./firmware-update.md
+[PSCI Lib guide]: ./psci-lib-integration-guide.md