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Message-ID: <20180618151450.3e740270@xps13>
Date:   Mon, 18 Jun 2018 15:14:50 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     boris.brezillon@...tlin.com, dwmw2@...radead.org,
        computersforpeace@...il.com, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/2] mtd: rawnand: support MT29F1G08ABAFAWP-ITE:F

Hi Chris,

On Mon, 18 Jun 2018 16:52:53 +1200, Chris Packham
<chris.packham@...iedtelesis.co.nz> wrote:

> Hi,
> 
> I'm looking at adding support for the Micron MT29F1G08ABAFAWP-ITE:F chip
> to one of our boards which uses the Marvell NFCv2 controller.
> 
> This particular chip is a bit odd in that the datasheet states support
> for ONFI 1.0 but the revision number field is 00 00. It also is marked
> ABAFA but reports internally as ABAGA. Finally it has internal 8-bit ECC
> which cannot be disabled.

Boris and I agree that in this case, the chip should not be probed if
ecc->type != ON_DIE (and eventually NONE).

This should be handled in the Micron driver.

Also, what is the returned value of micron_supports_on_die_ecc() (with
patch 1/2)?

Regards,
Miquèl

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