iio: accel: kxsd9: Add device tree bindings

This accelerometer can be probed from the device tree, so it needs
to have proper documentation of it's device tree bindings.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.txt b/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.txt
new file mode 100644 (file)
index 0000000..b25bf3a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.txt
@@ -0,0 +1,22 @@
+Kionix KXSD9 Accelerometer device tree bindings
+
+Required properties:
+ - compatible:                 should be set to "kionix,kxsd9"
+ - reg:                        i2c slave address
+
+Optional properties:
+ - vdd-supply:         The input supply for VDD
+ - iovdd-supply:       The input supply for IOVDD
+ - interrupts:         The movement detection interrupt
+ - mount-matrix:       See mount-matrix.txt
+
+Example:
+
+kxsd9@18 {
+       compatible = "kionix,kxsd9";
+       reg = <0x18>;
+       interrupt-parent = <&foo>;
+       interrupts = <57 IRQ_TYPE_EDGE_FALLING>;
+       iovdd-supply = <&bar>;
+       vdd-supply = <&baz>;
+};