diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index f14bf8c..0d36660 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -309,18 +309,6 @@
  ******************************************************************************/
 #define STM32MP1_TZC_BASE		U(0x5C006000)
 
-#define STM32MP1_TZC_A7_ID		U(0)
-#define STM32MP1_TZC_M4_ID		U(1)
-#define STM32MP1_TZC_LCD_ID		U(3)
-#define STM32MP1_TZC_GPU_ID		U(4)
-#define STM32MP1_TZC_MDMA_ID		U(5)
-#define STM32MP1_TZC_DMA_ID		U(6)
-#define STM32MP1_TZC_USB_HOST_ID	U(7)
-#define STM32MP1_TZC_USB_OTG_ID		U(8)
-#define STM32MP1_TZC_SDMMC_ID		U(9)
-#define STM32MP1_TZC_ETH_ID		U(10)
-#define STM32MP1_TZC_DAP_ID		U(15)
-
 #define STM32MP1_FILTER_BIT_ALL		(TZC_400_REGION_ATTR_FILTER_BIT(0) | \
 					 TZC_400_REGION_ATTR_FILTER_BIT(1))
 
diff --git a/plat/st/stm32mp1/stm32mp1_security.c b/plat/st/stm32mp1/stm32mp1_security.c
index 2ee5f4a..19ef4f0 100644
--- a/plat/st/stm32mp1/stm32mp1_security.c
+++ b/plat/st/stm32mp1/stm32mp1_security.c
@@ -12,21 +12,9 @@
 #include <drivers/arm/tzc400.h>
 #include <drivers/st/stm32mp1_clk.h>
 #include <dt-bindings/clock/stm32mp1-clks.h>
+#include <dt-bindings/soc/stm32mp15-tzc400.h>
 #include <lib/mmio.h>
 
-#define TZC_REGION_NSEC_ALL_ACCESS_RDWR \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_A7_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_GPU_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_LCD_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_MDMA_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_M4_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DMA_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_HOST_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_OTG_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_SDMMC_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_ETH_ID) | \
-	TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DAP_ID)
-
 static unsigned int region_nb;
 
 static void init_tzc400_begin(unsigned int region0_attr)