iio:as3935: Add DT binding docs for AS3935 driver

Document compatible string, required and optional DT properties for
AS3935 chipset driver.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/Documentation/devicetree/bindings/iio/proximity/as3935.txt b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
new file mode 100644 (file)
index 0000000..ae23dd8
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
@@ -0,0 +1,28 @@
+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>;
+};

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 40ce2df0e0e95add31ca573c65fc48227e2c1739..2025cee4b6b29a5fd8019beec41f45a01252dc3e 100644 (file)
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -11,6 +11,7 @@ ak    Asahi Kasei Corp.
 allwinner      Allwinner Technology Co., Ltd.
 altr   Altera Corp.
 amcc   Applied Micro Circuits Corporation (APM, formally AMCC)
 allwinner      Allwinner Technology Co., Ltd.
 altr   Altera Corp.
 amcc   Applied Micro Circuits Corporation (APM, formally AMCC)

+ams    AMS AG

 amstaos        AMS-Taos Inc.
 apm    Applied Micro Circuits Corporation (APM)
 arm    ARM Ltd.
 amstaos        AMS-Taos Inc.
 apm    Applied Micro Circuits Corporation (APM)
 arm    ARM Ltd.