From mboxrd@z Thu Jan 1 00:00:00 1970 From: Huang Shijie Subject: [PATCH v2 04/10] Documentation: mtd: add a new document for SPI NOR flash Date: Mon, 28 Apr 2014 11:53:41 +0800 Message-ID: <1398657227-20721-5-git-send-email-b32955@freescale.com> References: <1398657227-20721-1-git-send-email-b32955@freescale.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1398657227-20721-1-git-send-email-b32955-KZfg59tc24xl57MIdRCFDg@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org Cc: computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, marex-ynQEQJNshbs@public.gmane.org, linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Huang Shijie List-Id: devicetree@vger.kernel.org We need a DT property to store the dummy cycles for DDR Quad read. This is a common feature for the SPI NOR flash, such as Spansion and Micron chips. Add this file to describe this specific SPI NOR flash features which will be referred by the SPI NOR flash drivers. Signed-off-by: Huang Shijie --- .../devicetree/bindings/mtd/spi-nor-flash.txt | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/mtd/spi-nor-flash.txt diff --git a/Documentation/devicetree/bindings/mtd/spi-nor-flash.txt b/Documentation/devicetree/bindings/mtd/spi-nor-flash.txt new file mode 100644 index 0000000..aba4d54 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/spi-nor-flash.txt @@ -0,0 +1,7 @@ +This file defines some DT properties for specific SPI NOR flash features. +The SPI NOR controller drivers may refer to this file, such as fsl-quadspi.txt + +Optional properties: + - spi-nor,ddr-quad-read-dummy: The dummy cycles used by the DDR Quad read. + Please refer to the chip's datasheet. This + property can be 4 or 6 which is less then 8. -- 1.7.2.rc3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html