+--- a/include/mtd/mtd-abi.h
++++ b/include/mtd/mtd-abi.h
+@@ -127,6 +127,7 @@ struct otp_info {
+ #define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64)
+ #define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64)
+ #define MEMISLOCKED _IOR('M', 23, struct erase_info_user)
++#define MTDREFRESH _IO('M', 50)
+
+ /*
+ * Obsolete legacy interface. Keep it in order not to break userspace