diff --git a/arch/arm/mach-stm32mp/stm32mp1/cpu.c b/arch/arm/mach-stm32mp/stm32mp1/cpu.c
index 62cc989..cb1b84c 100644
--- a/arch/arm/mach-stm32mp/stm32mp1/cpu.c
+++ b/arch/arm/mach-stm32mp/stm32mp1/cpu.c
@@ -53,6 +53,7 @@
 	struct bd_info *bd = gd->bd;
 	int	i;
 	phys_addr_t start;
+	phys_addr_t addr;
 	phys_size_t size;
 	bool use_lmb = false;
 	enum dcache_option option;
@@ -77,8 +78,12 @@
 	for (i = start >> MMU_SECTION_SHIFT;
 	     i < (start >> MMU_SECTION_SHIFT) + (size >> MMU_SECTION_SHIFT);
 	     i++) {
+		addr = i << MMU_SECTION_SHIFT;
 		option = DCACHE_DEFAULT_OPTION;
-		if (use_lmb && lmb_is_reserved_flags(i << MMU_SECTION_SHIFT, LMB_NOMAP))
+		if (use_lmb &&
+		    (lmb_is_reserved_flags(i << MMU_SECTION_SHIFT, LMB_NOMAP) ||
+		    addr >= gd->ram_top)
+		   )
 			option = 0; /* INVALID ENTRY in TLB */
 		set_section_dcache(i, option);
 	}