diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst
index 5786dd3..af36b6a 100644
--- a/docs/getting_started/porting-guide.rst
+++ b/docs/getting_started/porting-guide.rst
@@ -2202,6 +2202,19 @@
 above the CPU might require initialization due to having previously been in
 low power states. The generic code expects the handler to succeed.
 
+plat_psci_ops.pwr_domain_on_finish_late() [optional]
+...........................................................
+
+This optional function is called by the PSCI implementation after the calling
+CPU is fully powered on with respective data caches enabled. The calling CPU and
+the associated cluster are guaranteed to be participating in coherency. This
+function gives the flexibility to perform any platform-specific actions safely,
+such as initialization or modification of shared data structures, without the
+overhead of explicit cache maintainace operations.
+
+The ``target_state`` has a similar meaning as described in the ``pwr_domain_on_finish()``
+operation. The generic code expects the handler to succeed.
+
 plat_psci_ops.pwr_domain_suspend_finish()
 .........................................
 
diff --git a/include/lib/psci/psci.h b/include/lib/psci/psci.h
index 04e5e3d..7f7b7e3 100644
--- a/include/lib/psci/psci.h
+++ b/include/lib/psci/psci.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -301,6 +301,8 @@
 				const psci_power_state_t *target_state);
 	void (*pwr_domain_suspend)(const psci_power_state_t *target_state);
 	void (*pwr_domain_on_finish)(const psci_power_state_t *target_state);
+	void (*pwr_domain_on_finish_late)(
+				const psci_power_state_t *target_state);
 	void (*pwr_domain_suspend_finish)(
 				const psci_power_state_t *target_state);
 	void __dead2 (*pwr_domain_pwr_down_wfi)(
diff --git a/lib/psci/psci_on.c b/lib/psci/psci_on.c
index aa6b324..470b4f3 100644
--- a/lib/psci/psci_on.c
+++ b/lib/psci/psci_on.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -182,6 +182,14 @@
 #endif
 
 	/*
+	 * Plat. management: Perform any platform specific actions which
+	 * can only be done with the cpu and the cluster guaranteed to
+	 * be coherent.
+	 */
+	if (psci_plat_pm_ops->pwr_domain_on_finish_late != NULL)
+		psci_plat_pm_ops->pwr_domain_on_finish_late(state_info);
+
+	/*
 	 * All the platform specific actions for turning this cpu
 	 * on have completed. Perform enough arch.initialization
 	 * to run in the non-secure address space.