[PATCH v2] itg3200: add dt support.

[NeilBrown <neilb-l3A5Bk7waGM@public.gmane.org>]

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No new configuration, just a 'compatible' string and documentation.

Signed-off-by: NeilBrown <neilb-l3A5Bk7waGM@public.gmane.org>

diff --git a/Documentation/devicetree/bindings/iio/gyro/itg3200.txt
b/Documentation/devicetree/bindings/iio/gyro/itg3200.txt new file mode 100644
index 000000000000..4581620632df
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/gyro/itg3200.txt
@@ -0,0 +1,20 @@
+* InvenSense ITG3200 3-axis gyroscope
+
+Required properties:
+
+  - compatible : "invensense,itg3200"
+  - reg : I2C address, typically 0x68
+
+Optional properties:
+
+  - interrupt-parent : should be the phandle for the interrupt controller
+  - interrupts : interrupt mapping for IRQ
+
+Example:
+
+itg3200@68 {
+	compatible = "invensense,itg3200";
+	reg = <0x68>;
+	interrupt-parent = <&gpio2>;
+	interrupts = <24 IRQ_TYPE_EDGE_RISING>;
+};
diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c
index 4d3f3b92b361..1ed3003ef41a 100644
--- a/drivers/iio/gyro/itg3200_core.c
+++ b/drivers/iio/gyro/itg3200_core.c
@@ -374,10 +374,17 @@ static const struct i2c_device_id itg3200_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, itg3200_id);
 
+static const struct of_device_id itg3200_of_match[] = {
+	{ .compatible = "invensense,itg3200", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, itg3200_of_match);
+
 static struct i2c_driver itg3200_driver = {
 	.driver = {
 		.owner  = THIS_MODULE,
 		.name	= "itg3200",
+		.of_match_table = of_match_ptr(itg3200_of_match),
 	},
 	.id_table	= itg3200_id,
 	.probe		= itg3200_probe,

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