Wear-leveling peculiarities

[Jeff Lauruhn (jlauruhn)]

If the part is ONFI compliant you can always dump the parameter page and any information you need.  


Jeff Lauruhn
NAND Application Engineer
Embedded Business Unit
Micron Technology, Inc

-----Original Message-----
From: linux-mtd [mailto:linux-mtd-bounces at lists.infradead.org] On Behalf Of Johannes Bauer
Sent: Tuesday, May 26, 2015 4:14 AM
To: Richard Weinberger
Cc: linux-mtd at lists.infradead.org
Subject: Re: Wear-leveling peculiarities

Am 26.05.2015 12:08, schrieb Richard Weinberger:

> What flash is this?
> I should not start dying that early.

To be honest, I have no idea. The problem is that the CPU is stacked on top of the NAND via package-on-package technlogoly. The whole component is supplied by a third party (and I've just scanned their documentation, which does not give any hints about the origin of the NAND). So I have no markings on the package (POP) and no documentation. The only thing I do have is dmesg:

omap2-nand driver initializing
ONFI flash detected
NAND device: Manufacturer ID: 0x20, Chip ID: 0xaa (ST Micro NAND 256MiB 1,8V 8-bit)

Maybe there's a way to talk to the NAND directly and get some more identification, but I don't know how. Any hints? I'd happily provide clues.

Cheers,
Johannes

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