diff --git a/arch/arm/src/imx6/Kconfig b/arch/arm/src/imx6/Kconfig
index 407964db6f5..7250001d562 100644
--- a/arch/arm/src/imx6/Kconfig
+++ b/arch/arm/src/imx6/Kconfig
@@ -93,6 +93,10 @@ config IMX6_SPI2
 
 endmenu # iMX Peripheral Selection
 
+config IMX_DDR_SIZE
+	int "Installed DRAM size (bytes)"
+	default 268435456
+
 choice
 	prompt "i.MX6 Boot Configuration"
 	default IMX6_BOOT_SDRAM
diff --git a/arch/arm/src/imx6/chip/imx_memorymap.h b/arch/arm/src/imx6/chip/imx_memorymap.h
index 5fc1cfb61a1..fe58239a662 100644
--- a/arch/arm/src/imx6/chip/imx_memorymap.h
+++ b/arch/arm/src/imx6/chip/imx_memorymap.h
@@ -469,7 +469,7 @@
 #define IMX_IPU1_SECSIZE       (4*1024*1024) /* 02600000-029fffff   4 MB IPU-1 */
 #define IMX_IPU2_SECSIZE       (4*1024*1024) /* 02a00000-02dfffff   4 MB IPU-2 */
 #define IMX_EIM_SECSIZE     MKULONG(CONFIG_IMX_EIM_SIZE) /* 08000000-0fffffff 128 MB EIM - (NOR/SRAM) */
-#define IMX_MMDCDDR_SECSIZE MKULONG(CONFIG_IMX_DDR_SIZE  /* 10000000-ffffffff 3840 MB MMDC-DDR Controller */
+#define IMX_MMDCDDR_SECSIZE MKULONG(CONFIG_IMX_DDR_SIZE) /* 10000000-ffffffff 3840 MB MMDC-DDR Controller */
                                              /* 10000000-7fffffff 1792 MB */
 
 /* Convert size in bytes to number of sections (in Mb). */
diff --git a/arch/arm/src/imx6/imx_memorymap.c b/arch/arm/src/imx6/imx_memorymap.c
index 4dc8743889a..1189dd5d7f8 100644
--- a/arch/arm/src/imx6/imx_memorymap.c
+++ b/arch/arm/src/imx6/imx_memorymap.c
@@ -151,6 +151,10 @@ const struct section_mapping_s g_section_mapping[] =
   { IMX_MMDCDDR_PSECTION,   IMX_MMDCDDR_VSECTION,   /* MMDC-DDR Controller */
     MMU_STRONGLY_ORDERED,   IMX_MMDCDDR_NSECTIONS
   },
+#else
+  { IMX_MMDCDDR_PSECTION,   IMX_MMDCDDR_VSECTION,   /* MMDC-DDR Controller */
+    IMX_MMDCDDR_MMUFLAGS,   IMX_MMDCDDR_NSECTIONS
+  },
 #endif
 
   /* LCDC Framebuffer.  This entry reprograms a part of one of the above