diff --git a/plat/nvidia/tegra/include/t194/tegra_def.h b/plat/nvidia/tegra/include/t194/tegra_def.h
index 2b578d5..0037b49 100644
--- a/plat/nvidia/tegra/include/t194/tegra_def.h
+++ b/plat/nvidia/tegra/include/t194/tegra_def.h
@@ -156,16 +156,21 @@
  * Tegra scratch registers constants
  ******************************************************************************/
 #define TEGRA_SCRATCH_BASE		U(0x0C390000)
-#define  SECURE_SCRATCH_RSV1_LO		U(0x06C)
-#define  SECURE_SCRATCH_RSV1_HI		U(0x070)
-#define  SECURE_SCRATCH_RSV6		U(0x094)
-#define  SECURE_SCRATCH_RSV11_LO	U(0x0BC)
-#define  SECURE_SCRATCH_RSV11_HI	U(0x0C0)
-#define  SECURE_SCRATCH_RSV53_LO	U(0x20C)
-#define  SECURE_SCRATCH_RSV53_HI	U(0x210)
-#define  SECURE_SCRATCH_RSV54_HI	U(0x218)
-#define  SECURE_SCRATCH_RSV55_LO	U(0x21C)
-#define  SECURE_SCRATCH_RSV55_HI	U(0x220)
+#define  SECURE_SCRATCH_RSV44_LO	U(0x1C4)
+#define  SECURE_SCRATCH_RSV44_HI	U(0x1C8)
+#define  SECURE_SCRATCH_RSV97		U(0x36C)
+#define  SECURE_SCRATCH_RSV99_LO	U(0x37C)
+#define  SECURE_SCRATCH_RSV99_HI	U(0x380)
+#define  SECURE_SCRATCH_RSV109_LO	U(0x3CC)
+#define  SECURE_SCRATCH_RSV109_HI	U(0x3D0)
+
+#define SCRATCH_BL31_PARAMS_ADDR	SECURE_SCRATCH_RSV44_LO
+#define SCRATCH_BL31_PLAT_PARAMS_ADDR	SECURE_SCRATCH_RSV44_HI
+#define SCRATCH_SECURE_BOOTP_FCFG	SECURE_SCRATCH_RSV97
+#define SCRATCH_SMMU_TABLE_ADDR_LO	SECURE_SCRATCH_RSV99_LO
+#define SCRATCH_SMMU_TABLE_ADDR_HI	SECURE_SCRATCH_RSV99_HI
+#define SCRATCH_RESET_VECTOR_LO		SECURE_SCRATCH_RSV109_LO
+#define SCRATCH_RESET_VECTOR_HI		SECURE_SCRATCH_RSV109_HI
 
 /*******************************************************************************
  * Tegra Memory Mapped Control Register Access Bus constants
diff --git a/plat/nvidia/tegra/soc/t194/plat_memctrl.c b/plat/nvidia/tegra/soc/t194/plat_memctrl.c
index 0bacc86..0a6345d 100644
--- a/plat/nvidia/tegra/soc/t194/plat_memctrl.c
+++ b/plat/nvidia/tegra/soc/t194/plat_memctrl.c
@@ -639,4 +639,4 @@
 tegra_mc_settings_t *tegra_get_mc_settings(void)
 {
 	return &tegra194_mc_settings;
-}
+}
\ No newline at end of file
diff --git a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
index 47a502a..0932061 100644
--- a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
+++ b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
@@ -144,7 +144,7 @@
 
 		/* save 'Secure Boot' Processor Feature Config Register */
 		val = mmio_read_32(TEGRA_MISC_BASE + MISCREG_PFCFG);
-		mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV6, val);
+		mmio_write_32(TEGRA_SCRATCH_BASE + SCRATCH_SECURE_BOOTP_FCFG, val);
 
 #if ENABLE_SYSTEM_SUSPEND_CTX_SAVE_TZDRAM
 		/* save SMMU context */
diff --git a/plat/nvidia/tegra/soc/t194/plat_secondary.c b/plat/nvidia/tegra/soc/t194/plat_secondary.c
index c54ca28..0947c31 100644
--- a/plat/nvidia/tegra/soc/t194/plat_secondary.c
+++ b/plat/nvidia/tegra/soc/t194/plat_secondary.c
@@ -55,8 +55,8 @@
 	mmio_write_32(TEGRA_MISC_BASE + MISCREG_AA64_RST_HIGH, addr_high);
 
 	/* save reset vector to be used during SYSTEM_SUSPEND exit */
-	mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV1_LO,
+	mmio_write_32(TEGRA_SCRATCH_BASE + SCRATCH_RESET_VECTOR_LO,
 			addr_low);
-	mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV1_HI,
+	mmio_write_32(TEGRA_SCRATCH_BASE + SCRATCH_RESET_VECTOR_HI,
 			addr_high);
 }
diff --git a/plat/nvidia/tegra/soc/t194/plat_setup.c b/plat/nvidia/tegra/soc/t194/plat_setup.c
index 08bd710..195ee9f 100644
--- a/plat/nvidia/tegra/soc/t194/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t194/plat_setup.c
@@ -269,7 +269,7 @@
 {
 	uint32_t val;
 
-	val = mmio_read_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV53_LO);
+	val = mmio_read_32(TEGRA_SCRATCH_BASE + SCRATCH_BL31_PARAMS_ADDR);
 
 	return (struct tegra_bl31_params *)(uintptr_t)val;
 }
@@ -281,7 +281,7 @@
 {
 	uint32_t val;
 
-	val = mmio_read_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV53_HI);
+	val = mmio_read_32(TEGRA_SCRATCH_BASE + SCRATCH_BL31_PLAT_PARAMS_ADDR);
 
 	return (plat_params_from_bl2_t *)(uintptr_t)val;
 }
diff --git a/plat/nvidia/tegra/soc/t194/plat_smmu.c b/plat/nvidia/tegra/soc/t194/plat_smmu.c
index 8913a01..19917a9 100644
--- a/plat/nvidia/tegra/soc/t194/plat_smmu.c
+++ b/plat/nvidia/tegra/soc/t194/plat_smmu.c
@@ -436,4 +436,4 @@
 	}
 
 	return ret_num;
-}
+}
\ No newline at end of file