mtd: docg3: add device-tree documentation

Add documentation for the sandisk docg3 chip.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/Documentation/devicetree/bindings/mtd/diskonchip.txt b/Documentation/devicetree/bindings/mtd/diskonchip.txt
new file mode 100644 (file)
index 0000000..3e13bfd
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/diskonchip.txt
@@ -0,0 +1,15 @@
+M-Systems and Sandisk DiskOnChip devices
+
+M-System DiskOnChip G3
+======================
+The Sandisk (formerly M-Systems) docg3 is a nand device of 64M to 256MB.
+
+Required properties:
+ - compatible: should be "m-systems,diskonchip-g3"
+ - reg: register base and size
+
+Example:
+       docg3: flash@0 {
+               compatible = "m-systems,diskonchip-g3";
+               reg = <0x0 0x2000>;
+       };