Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / iio / proximity / as3935.txt

diff --git a/kernel/Documentation/devicetree/bindings/iio/proximity/as3935.txt b/kernel/Documentation/devicetree/bindings/iio/proximity/as3935.txt
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+Austrian Microsystems AS3935 Franklin lightning sensor device driver
+
+Required properties:
+       - compatible: must be "ams,as3935"
+       - reg: SPI chip select number for the device
+       - spi-cpha: SPI Mode 1. Refer to spi/spi-bus.txt for generic SPI
+       slave node bindings.
+       - interrupt-parent : should be the phandle for the interrupt controller
+       - interrupts : the sole interrupt generated by the device
+
+       Refer to interrupt-controller/interrupts.txt for generic
+       interrupt client node bindings.
+
+Optional properties:
+       - ams,tuning-capacitor-pf: Calibration tuning capacitor stepping
+         value 0 - 120pF. This will require using the calibration data from
+         the manufacturer.
+
+Example:
+
+as3935@0 {
+       compatible = "ams,as3935";
+       reg = <0>;
+       spi-cpha;
+       interrupt-parent = <&gpio1>;
+       interrupts = <16 1>;
+       ams,tuning-capacitor-pf = <80>;
+};