diff --git a/plat/qti/msm8916/include/platform_def.h b/plat/qti/msm8916/include/platform_def.h
index 02bfd37..4677f06 100644
--- a/plat/qti/msm8916/include/platform_def.h
+++ b/plat/qti/msm8916/include/platform_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, Stephan Gerhold <stephan@gerhold.net>
+ * Copyright (c) 2021-2023, Stephan Gerhold <stephan@gerhold.net>
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -45,8 +45,9 @@
 #define PLAT_PHY_ADDR_SPACE_SIZE	(ULL(1) << 32)
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(ULL(1) << 32)
 
-/* Timer frequency */
+/* Timer */
 #define PLAT_SYSCNT_FREQ		19200000
+#define IRQ_SEC_PHY_TIMER		(16 + 2)	/* PPI #2 */
 
 /*
  * The Qualcomm QGIC2 implementation seems to have PIDR0-4 and PIDR4-7
@@ -55,4 +56,9 @@
  */
 #define GICD_PIDR2_GICV2		U(0xFD8)
 
+/* TSP */
+#define TSP_IRQ_SEC_PHY_TIMER		IRQ_SEC_PHY_TIMER
+#define TSP_SEC_MEM_BASE		BL32_BASE
+#define TSP_SEC_MEM_SIZE		(BL32_LIMIT - BL32_BASE)
+
 #endif /* PLATFORM_DEF_H */