diff --git a/drivers/mtd/mx25lx.c b/drivers/mtd/mx25lx.c
index d7c9f079d5..f8a19de551 100644
--- a/drivers/mtd/mx25lx.c
+++ b/drivers/mtd/mx25lx.c
@@ -94,6 +94,12 @@
 #define MX25L_MX25L6433F_NSECTORS      2048
 #define MX25L_MX25L6433F_PAGE_SHIFT    8     /* Page size 1 << 8 = 256 */
 
+/* MX25L25635F capacity is 256Mbit */
+
+#define MX25L_MX25L25635F_SECTOR_SHIFT  12    /* Sector size 1 << 12 = 4Kb */
+#define MX25L_MX25L25635F_NSECTORS      8192
+#define MX25L_MX25L25635F_PAGE_SHIFT    8     /* Page size 1 << 8 = 256 */
+
 #ifdef CONFIG_MX25L_SECTOR512                /* Simulate a 512 byte sector */
 #  define MX25L_SECTOR512_SHIFT        9     /* Sector size 1 << 9 = 512 bytes */
 #endif
@@ -169,6 +175,7 @@
 #define MX25L_JEDEC_MEMORY_TYPE          0x20  /* MX25Lx  memory type */
 #define MX25L_JEDEC_MX25L3233F_CAPACITY  0x16  /* MX25L3233F memory capacity */
 #define MX25L_JEDEC_MX25L6433F_CAPACITY  0x17  /* MX25L6433F memory capacity */
+#define MX25L_JEDEC_MX25L25635F_CAPACITY 0x19  /* MX25L25635F memory capacity */
 
 /* Status register bit definitions */
 
@@ -356,6 +363,15 @@ static inline int mx25l_readid(FAR struct mx25l_dev_s *priv)
            priv->pageshift   = MX25L_MX25L6433F_PAGE_SHIFT;
            return OK;
         }
+      else if (capacity == MX25L_JEDEC_MX25L25635F_CAPACITY)
+        {
+          /* Save the FLASH geometry */
+
+          priv->sectorshift = MX25L_MX25L25635F_SECTOR_SHIFT;
+          priv->nsectors    = MX25L_MX25L25635F_NSECTORS;
+          priv->pageshift   = MX25L_MX25L25635F_PAGE_SHIFT;
+          return OK;
+        }
     }
 
   return -ENODEV;