Re: [RFC PATCH 1/9] mtd: nand: retrieve ECC requirements from HynixREAD ID byte 4

From: Boris BREZILLON
Date: Wed Feb 05 2014 - 08:54:28 EST


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@xxxxxxxxxxx>
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.

Indeed (as stated in this thread http://comments.gmane.org/gmane.linux.drivers.mtd/50252).
I'll remove this patch from the next version of this series and make use of the
nand-ecc-strength /nand-ecc-size DT properties instead.

Thanks.

Best Regards,

Boris

Why do you need this ECC information, for my reference?

Brian

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/