1Analog Devices AD7768-1 ADC device driver 2 3Required properties for the AD7768-1: 4 5- compatible: Must be "adi,ad7768-1" 6- reg: SPI chip select number for the device 7- spi-max-frequency: Max SPI frequency to use 8 see: Documentation/devicetree/bindings/spi/spi-bus.txt 9- clocks: phandle to the master clock (mclk) 10 see: Documentation/devicetree/bindings/clock/clock-bindings.txt 11- clock-names: Must be "mclk". 12- interrupts: IRQ line for the ADC 13 see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt 14- vref-supply: vref supply can be used as reference for conversion 15- adi,sync-in-gpios: must be the device tree identifier of the SYNC-IN pin. Enables 16 synchronization of multiple devices that require simultaneous sampling. 17 A pulse is always required if the configuration is changed in any way, for example 18 if the filter decimation rate changes. As the line is active low, it should 19 be marked GPIO_ACTIVE_LOW. 20 21Optional properties: 22 23 - reset-gpios : GPIO spec for the RESET pin. If specified, it will be asserted during 24 driver probe. As the line is active low, it should be marked GPIO_ACTIVE_LOW. 25 26Example: 27 28 adc@0 { 29 compatible = "adi,ad7768-1"; 30 reg = <0>; 31 spi-max-frequency = <2000000>; 32 spi-cpol; 33 spi-cpha; 34 vref-supply = <&adc_vref>; 35 interrupts = <25 IRQ_TYPE_EDGE_RISING>; 36 interrupt-parent = <&gpio>; 37 adi,sync-in-gpios = <&gpio 22 GPIO_ACTIVE_LOW>; 38 reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; 39 clocks = <&ad7768_mclk>; 40 clock-names = "mclk"; 41 }; 42