Re: [PATCH v2] mtd: spinand: add support for Foresee FS35ND01G-S1Y2

Daniel Palmer
2021-03-23T11:52:10Z

Hi Miquel,

On Tue, 23 Mar 2021 at 19:32, Miquel Raynal <miquel.raynal@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.