iio: imu: adis16480: Add docs for ADIS16480 IMU

Document support for ADIS16480 Inertial Measurement Unit.

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16480.txt b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.txt
new file mode 100644 (file)
index 0000000..39ab016
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.txt
@@ -0,0 +1,49 @@
+
+Analog Devices ADIS16480 and similar IMUs
+
+Required properties for the ADIS16480:
+
+- compatible: Must be one of
+       * "adi,adis16375"
+       * "adi,adis16480"
+       * "adi,adis16485"
+       * "adi,adis16488"
+       * "adi,adis16495-1"
+       * "adi,adis16495-2"
+       * "adi,adis16495-3"
+       * "adi,adis16497-1"
+       * "adi,adis16497-2"
+       * "adi,adis16497-3"
+- reg: SPI chip select number for the device
+- spi-max-frequency: Max SPI frequency to use
+       see: Documentation/devicetree/bindings/spi/spi-bus.txt
+- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt
+- spi-cpol: See Documentation/devicetree/bindings/spi/spi-bus.txt
+- interrupts: interrupt mapping for IRQ, accepted values are:
+       * IRQF_TRIGGER_RISING
+       * IRQF_TRIGGER_FALLING
+
+Optional properties:
+
+- interrupt-names: Data ready line selection. Valid values are:
+       * DIO1
+       * DIO2
+       * DIO3
+       * DIO4
+       If this field is left empty, DIO1 is assigned as default data ready
+       signal.
+- reset-gpios: must be the device tree identifier of the RESET pin. As the line
+       is active low, it should be marked GPIO_ACTIVE_LOW.
+
+Example:
+
+       imu@0 {
+               compatible = "adi,adis16495-1";
+               reg = <0>;
+               spi-max-frequency = <3200000>;
+               spi-cpol;
+               spi-cpha;
+               interrupts = <25 IRQF_TRIGGER_FALLING>;
+               interrupt-parent = <&gpio>;
+               interrupt-names = "DIO2";
+       };

diff --git a/MAINTAINERS b/MAINTAINERS
index 43b36dbed48e77bffcc94ea79b8a2e6d79ad0aae..e12215a88ff9d02a2cf199a2ec257c574f777ef8 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -950,6 +950,7 @@ F:  drivers/dma/dma-axi-dmac.c
 ANALOG DEVICES INC IIO DRIVERS
 M:     Lars-Peter Clausen <lars@metafoo.de>
 M:     Michael Hennerich <Michael.Hennerich@analog.com>
+M:     Stefan Popa <stefan.popa@analog.com>
 W:     http://wiki.analog.com/
 W:     http://ez.analog.com/community/linux-device-drivers
 S:     Supported