[PATCH 4/4] dt-bindings: input: Add documentation for gp2a sensor

[PaweÅ Chmiel]

From: Jonathan Bakker <xc-racer2@xxxxxxx>

This commit adds documentation for Sharp GP2AP002A00F.
It's Proximity/Opto Sensor connected over i2c.

Signed-off-by: Jonathan Bakker <xc-racer2@xxxxxxx>
Signed-off-by: PaweÅ Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx>
---
 .../bindings/input/sharp,gp2ap002a00f.txt     | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt

diff --git a/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt b/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt
new file mode 100644
index 000000000000..c524eb7d3d60
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt
@@ -0,0 +1,29 @@
+* Sharp GP2AP002A00F I2C Proximity/Opto Sensor
+
+Required properties:
+- compatible : Should be "sharp,gp2ap002a00f"
+- reg : The I2C address of the sensor
+- vout-gpio : The gpio connected to the vout pin
+- interrupt-parent : should be the phandle for the interrupt controller
+- interrupts : Interrupt mapping for GPIO IRQ, it should by configured with
+		flags IRQ_TYPE_EDGE_BOTH
+
+Optional properties:
+- wakeup : If the device is capable of waking up the system
+- io-channels : Phandle to an ADC channel connected to the light sensor
+- io-channel-names = "light";
+- poll-interval : Poll interval time in milliseconds, default 500ms
+- light-adc-max : Maximum light value reported, default 4096
+- light-adc-fuzz : Fuzz value for reported light value, default 80
+
+Example:
+
+gp2a@44 {
+	compatible = "sharp,gp2ap002a00f";
+	reg = <0x44>;
+	vout-gpio = <&gph0 2 GPIO_ACTIVE_HIGH>;
+	interrupt-parent = <&gph0>;
+	interrupts = <2 IRQ_TYPE_EDGE_BOTH>;
+	io-channels = <&adc 9>;
+	io-channel-names = "light";
+};
-- 
2.17.1