1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/proximity/ams,as3935.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Austrian Microsystems AS3935 Franklin lightning sensor 8 9maintainers: 10 - Matt Ranostay <matt.ranostay@konsulko.com> 11 12description: 13 This lightening distance sensor uses an I2C or SPI interface. The 14 binding currently only covers the SPI option. 15 16properties: 17 compatible: 18 const: ams,as3935 19 20 reg: 21 maxItems: 1 22 23 spi-max-frequency: 24 maximum: 2000000 25 26 spi-cpha: true 27 28 interrupts: 29 maxItems: 1 30 31 ams,tuning-capacitor-pf: 32 $ref: /schemas/types.yaml#/definitions/uint32 33 description: 34 Calibration tuning capacitor stepping value. This will require using 35 the calibration data from the manufacturer. 36 minimum: 0 37 maximum: 120 38 39 ams,nflwdth: 40 $ref: /schemas/types.yaml#/definitions/uint32 41 description: 42 Set the noise and watchdog threshold register on startup. This will 43 need to set according to the noise from the MCU board, and possibly 44 the local environment. Refer to the datasheet for the threshold settings. 45 46required: 47 - compatible 48 - reg 49 - spi-cpha 50 - interrupts 51 52additionalProperties: false 53 54examples: 55 - | 56 spi { 57 #address-cells = <1>; 58 #size-cells = <0>; 59 60 lightning@0 { 61 compatible = "ams,as3935"; 62 reg = <0>; 63 spi-max-frequency = <400000>; 64 spi-cpha; 65 interrupt-parent = <&gpio1>; 66 interrupts = <16 1>; 67 ams,tuning-capacitor-pf = <80>; 68 ams,nflwdth = <0x44>; 69 }; 70 }; 71... 72