From: boris brezillon <b.brezillon@overkiz.com>
To: Brian Norris <computersforpeace@gmail.com>
Cc: devicetree@vger.kernel.org, Russell King <linux@arm.linux.org.uk>,
linux-doc@vger.kernel.org, dev@linux-sunxi.org,
linux-kernel@vger.kernel.org, Huang Shijie <b32955@freescale.com>,
linux-mtd@lists.infradead.org, Rob Landley <rob@landley.net>,
Grant Likely <grant.likely@linaro.org>,
Maxime Ripard <maxime.ripard@free-electrons.com>,
David Woodhouse <dwmw2@infradead.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH 1/9] mtd: nand: retrieve ECC requirements from Hynix READ ID byte 4
Date: Wed, 29 Jan 2014 11:29:59 +0100 [thread overview]
Message-ID: <52E8D827.8010609@overkiz.com> (raw)
In-Reply-To: <20140123014906.GY8919@ld-irv-0074>
Hello Brian,
On 23/01/2014 02:49, Brian Norris wrote:
> + Huang
>
> Hi Boris,
>
> On Wed, Jan 08, 2014 at 03:21:56PM +0100, Boris BREZILLON wrote:
>> The Hynix nand flashes store their ECC requirements in byte 4 of its id
>> (returned on READ ID command).
>>
>> Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
> I haven't verified yet (perhaps Huang can confirm?), but this may be
> similar to a patch Huang submitted recently. In his case, we found that
> this table is actually quite unreliable and is likely hard to maintain.
You mean these bytes are not reliable within the whole Hynix LP (Large Page)
NAND product line ?
>
> Why do you need this ECC information, for my reference?
Because the NAND flash available on the cubietruck board does not
support the
ONFI standard, and I thought this could be a option to retrieve the ECC
strength
requirements.
Anyway, I added a new helper function to retrieve ecc informations from
device
tree (I'll post it in the 2nd version of this series). We'll see if this
approach is
accepted...
>
> Brian
next prev parent reply other threads:[~2014-01-29 10:31 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-08 14:21 [RFC PATCH 0/9] mtd: nand: add sunxi NAND Flash Controller support Boris BREZILLON
[not found] ` < 1389190924-26226-4-git-send-email-b.brezillon@overkiz.com>
2014-01-08 14:21 ` [RFC PATCH 1/9] mtd: nand: retrieve ECC requirements from Hynix READ ID byte 4 Boris BREZILLON
2014-01-23 1:49 ` Brian Norris
2014-01-29 10:29 ` boris brezillon [this message]
2014-02-05 13:53 ` Boris BREZILLON
2014-01-08 14:21 ` [RFC PATCH 2/9] mtd: nand: define struct nand_timings Boris BREZILLON
2014-01-08 14:21 ` [RFC PATCH 3/9] of: mtd: add NAND timings retrieval support Boris BREZILLON
2014-01-08 16:30 ` Rob Herring
2014-01-08 16:36 ` boris brezillon
2014-01-08 18:34 ` Jason Gunthorpe
2014-01-08 19:00 ` boris brezillon
2014-01-08 19:13 ` Jason Gunthorpe
2014-01-09 8:36 ` boris brezillon
2014-01-09 17:35 ` Jason Gunthorpe
2014-01-15 15:09 ` boris brezillon
2014-01-15 17:03 ` boris brezillon
2014-01-21 22:57 ` Jason Gunthorpe
2014-02-04 17:02 ` Grant Likely
2014-01-08 14:21 ` [RFC PATCH 4/9] of: mtd: add NAND timings bindings documentation Boris BREZILLON
2014-01-08 14:22 ` [RFC PATCH 5/9] mtd: nand: add sunxi NFC support Boris BREZILLON
2014-01-08 19:21 ` boris brezillon
2014-01-08 14:22 ` [RFC PATCH 6/9] mtd: nand: add sunxi NFC dt bindings doc Boris BREZILLON
2014-01-08 21:28 ` Arnd Bergmann
2014-01-09 8:31 ` boris brezillon
2014-01-09 10:00 ` Arnd Bergmann
2014-01-08 14:22 ` [RFC PATCH 7/9] ARM: dt/sunxi: add NFC node to Allwinner A20 SoC Boris BREZILLON
2014-01-08 14:22 ` [RFC PATCH 8/9] ARM: dt/sunxi: add NFC pinctrl pin definitions Boris BREZILLON
2014-01-08 15:28 ` [RFC PATCH 9/9] ARM: sunxi/dt: enable NAND on cubietruck board Boris BREZILLON
2014-01-08 15:30 ` boris brezillon
2014-01-11 13:38 ` [RFC PATCH 0/9] mtd: nand: add sunxi NAND Flash Controller support boris brezillon
[not found] ` <1389449230.19197.2.camel@localhost>
[not found] ` <52D1541F.4040400@overkiz.com>
[not found] ` <1389456075.20989.11.camel@localhost>
[not found] ` <1389474709.22660.4.camel@localhost>
2014-01-13 9:02 ` [linux-sunxi] " boris brezillon
2014-01-13 9:48 ` Henrik Nordström
[not found] ` <6de6ead1-e437-410b-91c0-74afb37dbf39@googlegroups.com>
2014-01-21 18:13 ` Henrik Nordström
2014-01-21 20:55 ` Henrik Nordström
2014-01-29 15:11 ` Michal Suchanek
2014-01-29 15:43 ` boris brezillon dev
2014-01-29 16:08 ` Michal Suchanek
2014-01-29 16:55 ` boris brezillon dev
2014-01-23 15:22 ` Rob Herring
2014-01-29 10:20 ` boris brezillon
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