Hi Boris,
On 24/9/2018 10:09 AM, Boris Brezillon wrote:
On Mon, 24 Sep 2018 08:45:44 +0200
Daniel Mack <daniel@xxxxxxxxxx> wrote:
[...]
The legacy pxa3xx_nand driver didn't have this issue, but my system was
also running a much older kernel with that. I'm currently still
struggling to resurrect the old code, but I'm running into "Wait time
out!!!" conditions immediately right now. Not sure what's going on.
Hm, so that means the old driver has pretty much the same issue.
I thought so too, but unlike the new driver, the old one bails out
pretty much immediately, and also when using the in-kernel mtd tests, so
the behavior seems different. Not sure if that's really the same effect.
Interestingly, I can't seem to reproduce the bug with any of the mtd
kernel tests, I've tried all of them, several times, and all succeed. So
a file system test that includes the UBI/UBIFS layers seems to trigger
different things in the driver than the the tests that operate on the
mtd device directly.
Looking at the backtrace, it seems to fail on a high PEB num. Are you
interfacing with a dual-die chip? Can you share the part number of your
chip?
The chip is a NAND01GR3B2BZA which is identified like this during probe:
[ 3.980817] nand: device found, Manufacturer ID: 0x20, Chip ID: 0xa1
[ 3.988736] nand: ST Micro NAND 128MiB 1,8V 8-bit
[ 3.994644] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048,
OOB size: 64
[ 4.003021] marvell-nfc 43100000.nand-controller: No minimum ECC
strength, using 1b/512B
[ 4.011219] Scanning device for bad blocks
[ 4.128042] Bad eraseblock 399 at 0x0000031e0000
[ 4.168843] Bad eraseblock 528 at 0x000004200000
[ 4.174076] Bad eraseblock 529 at 0x000004220000
Note that the hardware design is now almost 10 years old.
You can try to run the mtd tests on eraseblock 905, just to check if
they pass or not.
Will do when I'm back on that board, but just for my better
understanding: aren't the tests running on all eraseblocks anyway? Would
it make a difference to just let it run on a specific one?
Also, when you run the ubi/ubifs/bonnie++ tests, does
it always fail on the same PEB?
Nope. My backlog shows the issue for PEB 465, 572, 569, 586, 612, 729,
905, 962 etc.
Thanks for your help,
Daniel
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