From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mail-pb0-f42.google.com ([209.85.160.42])
 by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux))
 id 1WNnt0-0007M4-5O
 for linux-mtd@lists.infradead.org; Wed, 12 Mar 2014 18:28:14 +0000
Received: by mail-pb0-f42.google.com with SMTP id rr13so1469957pbb.1
 for <linux-mtd@lists.infradead.org>; Wed, 12 Mar 2014 11:27:47 -0700 (PDT)
Sender: Warner Losh <wlosh@bsdimp.com>
Content-Type: text/plain; charset=windows-1252
Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\))
Subject: Re: [PATCH v3 4/9] of: mtd: add documentation for the ONFI NAND
 timing mode property
From: Warner Losh <imp@bsdimp.com>
In-Reply-To: <1394647664-8258-5-git-send-email-b.brezillon.dev@gmail.com>
Date: Wed, 12 Mar 2014 12:27:40 -0600
Content-Transfer-Encoding: quoted-printable
Message-Id: <F8865D0A-59A7-41A7-AA7F-9B91DF5C8258@gmail.com>
References: <1394647664-8258-1-git-send-email-b.brezillon.dev@gmail.com>
 <1394647664-8258-5-git-send-email-b.brezillon.dev@gmail.com>
To: Boris BREZILLON <b.brezillon.dev@gmail.com>
Cc: devicetree@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
 linux-doc@vger.kernel.org, dev@linux-sunxi.org, linux-kernel@vger.kernel.org,
 Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
 Rob Herring <robherring2@gmail.com>, Grant Likely <grant.likely@linaro.org>,
 linux-mtd@lists.infradead.org,
 Maxime Ripard <maxime.ripard@free-electrons.com>,
 Brian Norris <computersforpeace@gmail.com>,
 David Woodhouse <dwmw2@infradead.org>, linux-arm-kernel@lists.infradead.org
List-Id: Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mtd>,
 <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-mtd/>
List-Post: <mailto:linux-mtd@lists.infradead.org>
List-Help: <mailto:linux-mtd-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mtd>,
 <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>


On Mar 12, 2014, at 12:07 PM, Boris BREZILLON =
<b.brezillon.dev@gmail.com> wrote:

> Add documentation for the ONFI NAND timing mode property.

I don=92t see a Toggle/JEDEC mode timing property. Will that be defined =
for Toshiba, Samsung
and San Disk flash? Or will this be limited to Micron, Intel and Hynix =
(the only ones
supporting ONFI)?

Warner


> Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com>
> ---
> Documentation/devicetree/bindings/mtd/nand.txt |    8 ++++++++
> 1 file changed, 8 insertions(+)
>=20
> diff --git a/Documentation/devicetree/bindings/mtd/nand.txt =
b/Documentation/devicetree/bindings/mtd/nand.txt
> index b53f92e..2046027 100644
> --- a/Documentation/devicetree/bindings/mtd/nand.txt
> +++ b/Documentation/devicetree/bindings/mtd/nand.txt
> @@ -19,3 +19,11 @@ errors per {size} bytes".
> The interpretation of these parameters is implementation-defined, so =
not all
> implementations must support all possible combinations. However, =
implementations
> are encouraged to further specify the value(s) they support.
> +
> +- onfi,nand-timing-mode: an integer encoding the supported ONFI =
timing modes of
> +  the NAND chip. Each supported mode is represented as a bit position =
(i.e. :
> +  mode 0 and 1 =3D> (1 << 0) | (1 << 1) =3D 0x3).
> +  This is only used when the chip does not support the ONFI standard.
> +  The last bit set represent the closest mode fulfilling the NAND =
chip timings.
> +  For a full description of the different timing modes see this =
document:
> +  www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf
> --=20
> 1.7.9.5
>=20
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" =
in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html