On 23.01.19 09:55, Boris Brezillon wrote:
On Wed, 23 Jan 2019 09:23:47 +0100
Stefan Roese <sr@xxxxxxx> wrote:
This one doesn't, incremental mode (-i) should.
Here you go:
# ./nandbiterrs /dev/mtd5 -k -i
incremental biterrors test
Failed to recover 1 bitflips
Read error after 0 bit errors per page
I'm still unsure how this helps here.
It helps, it tells us the ECC doesn't work properly (fails to recover
one bitflip), or maybe it's the raw accessors that don't don't work.
Is there anything else I should test?
Add traces to the get_ecc_status() func and print the status value.
# ./nandbiterrs /dev/mtd5 -k -i
[ 22.098436] gd5f1gq4u_ecc_get_status (124): status=0x00 status2=0x00
[ 22.117184] gd5f1gq4u_ecc_get_status (124): status=0x00 status2=0x00
<snip many identical lines>
[ 23.085412] gd5f1gq4u_ecc_get_status (124): status=0x00 status2=0x00
incremental biterrors test
[ 23.102973] gd5f1gq4u_ecc_get_status (124): status=0x20 status2=0x00
Failed to recover 1 bitflips
Read error after 0 bit errors per page
Strange, this does not seem to match what the datasheet tells us. Any
further ideas what I should test?
Thanks,
Stefan
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