diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index b479859b0..1d2977a93 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -718,8 +718,13 @@ static void bl2_advertise_dram_size(uint32_t product)
 		break;
 
 	case PRR_PRODUCT_M3N:
+#if (RCAR_DRAM_LPDDR4_MEMCONF == 2)
+		/* 4GB(4GBx1) */
+		dram_config[1] = 0x100000000ULL;
+#elif (RCAR_DRAM_LPDDR4_MEMCONF == 1)
 		/* 2GB(1GBx2) */
 		dram_config[1] = 0x80000000ULL;
+#endif
 		break;
 
 	case PRR_PRODUCT_V3M: