From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Norris Subject: Re: [RFC PATCH 1/9] mtd: nand: retrieve ECC requirements from Hynix READ ID byte 4 Date: Wed, 22 Jan 2014 17:49:06 -0800 Message-ID: <20140123014906.GY8919@ld-irv-0074> References: <1389190924-26226-1-git-send-email-b.brezillon@overkiz.com> <1389190924-26226-2-git-send-email-b.brezillon@overkiz.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1389190924-26226-2-git-send-email-b.brezillon@overkiz.com> Sender: linux-doc-owner@vger.kernel.org To: Boris BREZILLON Cc: Maxime Ripard , Rob Landley , Russell King , David Woodhouse , Grant Likely , devicetree@vger.kernel.org, linux-doc@vger.kernel.org, dev@linux-sunxi.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Huang Shijie List-Id: devicetree@vger.kernel.org + 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 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. Why do you need this ECC information, for my reference? Brian