diff --git a/plat/brcm/board/stingray/include/ihost_pm.h b/plat/brcm/board/stingray/include/ihost_pm.h
new file mode 100644
index 0000000..83493ab
--- /dev/null
+++ b/plat/brcm/board/stingray/include/ihost_pm.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IHOST_PM
+#define IHOST_PM
+
+#include <stdint.h>
+
+#define CLUSTER_POWER_ON	0x1
+#define CLUSTER_POWER_OFF	0x0
+
+void ihost_power_on_cluster(u_register_t mpidr);
+void ihost_power_on_secondary_core(u_register_t mpidr, uint64_t rvbar);
+void ihost_enable_satellite_timer(unsigned int cluster_id);
+
+#endif
diff --git a/plat/brcm/board/stingray/include/platform_def.h b/plat/brcm/board/stingray/include/platform_def.h
index 950c66b..d61a737 100644
--- a/plat/brcm/board/stingray/include/platform_def.h
+++ b/plat/brcm/board/stingray/include/platform_def.h
@@ -29,16 +29,14 @@
 #define PLATFORM_CLUSTER1_CORE_COUNT	2
 #define PLATFORM_CLUSTER2_CORE_COUNT	2
 #define PLATFORM_CLUSTER3_CORE_COUNT	2
-#define PLATFORM_CLUSTER4_CORE_COUNT	2
 
 #define BRCM_SYSTEM_COUNT 1
-#define BRCM_CLUSTER_COUNT 5
+#define BRCM_CLUSTER_COUNT 4
 
 #define PLATFORM_CORE_COUNT	(PLATFORM_CLUSTER0_CORE_COUNT + \
 					PLATFORM_CLUSTER1_CORE_COUNT+ \
 					PLATFORM_CLUSTER2_CORE_COUNT+ \
-					PLATFORM_CLUSTER3_CORE_COUNT+ \
-					PLATFORM_CLUSTER4_CORE_COUNT)
+					PLATFORM_CLUSTER3_CORE_COUNT)
 
 #define PLAT_NUM_PWR_DOMAINS	(BRCM_SYSTEM_COUNT + \
 				 BRCM_CLUSTER_COUNT + \
diff --git a/plat/brcm/board/stingray/include/timer_sync.h b/plat/brcm/board/stingray/include/timer_sync.h
new file mode 100644
index 0000000..1f15bb0
--- /dev/null
+++ b/plat/brcm/board/stingray/include/timer_sync.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2016 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TIMER_SYNC_H
+#define TIMER_SYNC_H
+
+void brcm_timer_sync_init(void);
+
+#endif