diff --git a/arch/arm/src/imx6/chip/imx_memorymap.h b/arch/arm/src/imx6/chip/imx_memorymap.h
index 87625af7908..de19b527436 100644
--- a/arch/arm/src/imx6/chip/imx_memorymap.h
+++ b/arch/arm/src/imx6/chip/imx_memorymap.h
@@ -1027,7 +1027,16 @@
  */
 
 #ifdef CONFIG_ARCH_LOWVECTORS  /* Vectors located at 0x0000:0000  */
-/* Vectors will always lie at the beginning of OCRAM */
+/* Vectors will always lie at the beginning of OCRAM
+ *
+ * OCRAM Memory Map:
+ * ---------- ---------- ---------------------------
+ * OFFSET     SIZE       CONTENT
+ * ---------- ---------- ---------------------------
+ * 0x00000000 0x00010000 Vectors (VECTOR_TABLE_SIZE)
+ * 0x00010000 0x0003c000 Unused
+ * 0x0003c000 0x00004000 Page table (PGTABLE_SIZE)
+ */
 
 #  define IMX_VECTOR_PADDR        IMX_OCRAM_PBASE
 #  define IMX_VECTOR_VSRAM        IMX_OCRAM_VBASE
@@ -1043,6 +1052,14 @@
 #endif
 
 #else  /* Vectors located at 0xffff:0000 -- this probably does not work */
+/* OCRAM Memory Map:
+ * ---------- ---------- ---------------------------
+ * OFFSET     SIZE       CONTENT
+ * ---------- ---------- ---------------------------
+ * 0x00000000 0x00004000 Page table (PGTABLE_SIZE)
+ * 0x00004000 0x00030000 Unused
+ * 0x00030000 0x00010000 Vectors (VECTOR_TABLE_SIZE)
+ */
 
 #  define IMX_VECTOR_PADDR        (IMX_OCRAM_PBASE + IMX_OCRAM_SIZE - VECTOR_TABLE_SIZE)
 #  define IMX_VECTOR_VSRAM        (IMX_OCRAM_VBASE + IMX_OCRAM_SIZE - VECTOR_TABLE_SIZE)