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From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Raphael Pereira <raphaelpereira@gmail.com>
Cc: miquel.raynal@bootlin.com, linux-mtd@lists.infradead.org
Subject: Re: Suport for gf_len 14 in gpmi-nand for i.MX23 using Software BCH ECC
Date: Sun, 5 Aug 2018 10:57:17 +0200	[thread overview]
Message-ID: <20180805105717.4aab931b@bbrezillon> (raw)
In-Reply-To: <CAAN9NvcPHsUDcJY82DhX8SR1hXTzgY4N7ijp9XQAgBE66LUM_g@mail.gmail.com>

Hi Raphael,

On Sat, 4 Aug 2018 21:39:13 -0300
Raphael Pereira <raphaelpereira@gmail.com> wrote:

> Hi Miquèl,
> 
> This old thread mentions the exact same part I am trying to use and it
> seems to work on i.MX6 SOLO, which supports 40bit ECC strengh, so I
> think the MLC issue is not the case, although I could not find the
> solution used as it seems it is not explicit in the thread:
> 
> http://lists.infradead.org/pipermail/linux-mtd/2015-April/058901.html

Trust me, getting the proper ECC config in place is just a tiny part of
the problem. I'm not saying supporting MLC NANDs is impossible, but it
requires spending a non-negligible amount of time to make it work
reliably (see [1] and [2] if you need more details).

Regards,

Boris

[1]https://events.static.linuxfound.org/sites/events/files/slides/brezillon-mlc-nand_0.pdf
[2]https://elinux.org/images/5/54/Weinberger.pdf

  reply	other threads:[~2018-08-05  8:57 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-01 21:29 Suport for gf_len 14 in gpmi-nand for i.MX23 using Software BCH ECC Raphael Pereira
2018-08-04  9:55 ` Miquel Raynal
2018-08-04 11:22   ` Raphael Pereira
2018-08-04 17:33     ` Miquel Raynal
2018-08-05  0:39       ` Raphael Pereira
2018-08-05  8:57         ` Boris Brezillon [this message]
2018-08-05  9:13     ` Boris Brezillon
2018-08-05 15:34       ` Raphael Pereira
2018-08-05 15:09   ` Boris Brezillon

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