Hi Miquel, On Tue, 23 Mar 2021 at 19:32, Miquel Raynal <miquel.ray...@bootlin.com> wrote: > You can run nandbiterrs -i /dev/mtdX > > You'll see if there is ECC correction or not (and its level).
These are results I get for both of the nandbiterrs tests. # nandbiterrs -i /dev/mtd1 incremental biterrors test Successfully corrected 0 bit errors per subpage Inserted biterror @ 0/5 Read reported 4 corrected bit errors ECC failure, invalid data despite read success # nandbiterrs -o /dev/mtd1 overwrite biterrors test Read reported 4 corrected bit errors Failed to recover 1 bitflips Bit error histogram (883 operations total): Page reads with 0 corrected bit errors: 845 Page reads with 1 corrected bit errors: 0 Page reads with 2 corrected bit errors: 0 Page reads with 3 corrected bit errors: 0 I guess this means ECC is there and it's working. Thanks, Daniel
