diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index 56092c8bf62..b7fcee2b367 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -225,9 +225,10 @@ static void early_enable_caches(void)
 	dcache_enable();
 
 	if (IS_ENABLED(CONFIG_SPL_BUILD))
-		mmu_set_region_dcache_behaviour(STM32_SYSRAM_BASE,
-						STM32_SYSRAM_SIZE,
-						DCACHE_DEFAULT_OPTION);
+		mmu_set_region_dcache_behaviour(
+			ALIGN(STM32_SYSRAM_BASE, MMU_SECTION_SIZE),
+			round_up(STM32_SYSRAM_SIZE, MMU_SECTION_SIZE),
+			DCACHE_DEFAULT_OPTION);
 	else
 		mmu_set_region_dcache_behaviour(STM32_DDR_BASE, STM32_DDR_SIZE,
 						DCACHE_DEFAULT_OPTION);