From: Brian Norris <computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
pawel.moll-5wv7dgnIgG8@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org,
voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH v3] mtd: atmel_nand: make PMECC lookup table and offset property optional
Date: Wed, 5 Nov 2014 14:44:47 -0800 [thread overview]
Message-ID: <20141105224447.GY23619@ld-irv-0074> (raw)
In-Reply-To: <1413021710-32264-1-git-send-email-josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
On Sat, Oct 11, 2014 at 06:01:50PM +0800, Josh Wu wrote:
> From: Josh Wu <Josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
>
> If there is no PMECC lookup table stored in ROM, or lookup table offset is
> not specified, PMECC driver should build it in DDR by itself.
>
> That make the PMECC driver work for some board which doesn't has PMECC
> lookup table in ROM.
>
> The PMECC use the BCH algorithm, so based on the build_gf_tables()
> function in lib/bch.c, we can build the Galois Field lookup table.
>
> For more information can refer to section 5.4 of PMECC controller
> application note:
> http://www.atmel.com/images/doc11127.pdf
>
> Signed-off-by: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Applied to l2-mtd.git.
Brian
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prev parent reply other threads:[~2014-11-05 22:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-11 10:01 [PATCH v3] mtd: atmel_nand: make PMECC lookup table and offset property optional Josh Wu
[not found] ` <1413021710-32264-1-git-send-email-josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2014-10-13 11:16 ` Mark Rutland
2014-10-13 11:31 ` Josh Wu
[not found] ` <543BB7FE.3030604-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2014-10-14 10:34 ` Josh Wu
[not found] ` <543CFC41.2060506-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2014-10-16 13:39 ` Mark Rutland
2014-10-29 6:41 ` Josh Wu
2014-11-05 22:44 ` Brian Norris [this message]
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