Austrian Microsystems AS3935 Franklin lightning sensor device driver Required properties: - compatible: must be "ams,as3935" - reg: SPI chip select number for the device - spi-max-frequency: specifies maximum SPI clock frequency - 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-max-frequency = <400000>; spi-cpha; interrupt-parent = <&gpio1>; interrupts = <16 1>; ams,tuning-capacitor-pf = <80>; };