[PATCH v2 04/10] Documentation: mtd: add a new document for SPI NOR flash

Huang Shijie b32955 at freescale.com
Sun Apr 27 20:53:41 PDT 2014

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

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 <b32955 at freescale.com>
 .../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.

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