--- zzzz-none-000/linux-3.10.107/Documentation/ABI/testing/sysfs-class-mtd	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/Documentation/ABI/testing/sysfs-class-mtd	2021-11-10 11:53:51.000000000 +0000
@@ -134,6 +134,44 @@
 
 		In the case of devices lacking any ECC capability, it is 0.
 
+What:		/sys/class/mtd/mtdX/ecc_failures
+Date:		June 2014
+KernelVersion:	3.17
+Contact:	linux-mtd@lists.infradead.org
+Description:
+		The number of failures reported by this device's ECC. Typically,
+		these failures are associated with failed read operations.
+
+		It will always be a non-negative integer.  In the case of
+		devices lacking any ECC capability, it is 0.
+
+What:		/sys/class/mtd/mtdX/corrected_bits
+Date:		June 2014
+KernelVersion:	3.17
+Contact:	linux-mtd@lists.infradead.org
+Description:
+		The number of bits that have been corrected by means of the
+		device's ECC.
+
+		It will always be a non-negative integer.  In the case of
+		devices lacking any ECC capability, it is 0.
+
+What:		/sys/class/mtd/mtdX/bad_blocks
+Date:		June 2014
+KernelVersion:	3.17
+Contact:	linux-mtd@lists.infradead.org
+Description:
+		The number of blocks marked as bad, if any, in this partition.
+
+What:		/sys/class/mtd/mtdX/bbt_blocks
+Date:		June 2014
+KernelVersion:	3.17
+Contact:	linux-mtd@lists.infradead.org
+Description:
+		The number of blocks that are marked as reserved, if any, in
+		this partition. These are typically used to store the in-flash
+		bad block table (BBT).
+
 What:		/sys/class/mtd/mtdX/bitflip_threshold
 Date:		April 2012
 KernelVersion:	3.4