[PATCH v4 2/3] dt-bindings: iio: position: Add docs pat9125

[Alexandre Mergnat]

Add documentation for the optical tracker PAT9125 and
"position" directory for chip which can provides position data.

Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
---
 .../bindings/iio/position/pat9125.txt          | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/position/pat9125.txt

diff --git a/Documentation/devicetree/bindings/iio/position/pat9125.txt b/Documentation/devicetree/bindings/iio/position/pat9125.txt
new file mode 100644
index 000000000000..4028aeef9b42
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/position/pat9125.txt
@@ -0,0 +1,18 @@
+PixArt Imaging PAT9125 Optical Tracking Miniature Chip device driver
+
+Required properties:
+	- compatible: must be "pixart,pat9125"
+	- reg: i2c address where to find the device
+	- interrupts: the sole interrupt generated by the device
+
+	Refer to interrupt-controller/interrupts.txt for generic
+	interrupt client node bindings.
+
+Example:
+
+pat9125@75 {
+	compatible = "pixart,pat9125";
+	reg = <0x75>;
+	interrupt-parent = <&gpio3>;
+	interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+};
-- 
2.17.1