1 * Texas Instruments' ADS8684 and ADS8688 ADC chip
4 - compatible: Should be "ti,ads8684" or "ti,ads8688"
5 - reg: spi chip select number for the device
7 Recommended properties:
8 - spi-max-frequency: Definition as per
9 Documentation/devicetree/bindings/spi/spi-bus.txt
12 - vref-supply: The regulator supply for ADC reference voltage
16 compatible = "ti,ads8688";
18 vref-supply = <&vdd_supply>;
19 spi-max-frequency = <1000000>;