1* Texas Instruments' ADC12130/ADC12132/ADC12138 2 3Required properties: 4 - compatible: Should be one of 5 * "ti,adc12130" 6 * "ti,adc12132" 7 * "ti,adc12138" 8 - reg: SPI chip select number for the device 9 - interrupts: Should contain interrupt for EOC (end of conversion) 10 - clocks: phandle to conversion clock input 11 - spi-max-frequency: Definision as per 12 Documentation/devicetree/bindings/spi/spi-bus.txt 13 - vref-p-supply: The regulator supply for positive analog voltage reference 14 15Optional properties: 16 - vref-n-supply: The regulator supply for negative analog voltage reference 17 (Note that this must not go below GND or exceed vref-p) 18 If not specified, this is assumed to be analog ground. 19 - ti,acquisition-time: The number of conversion clock periods for the S/H's 20 acquisition time. Should be one of 6, 10, 18, 34. If not specified, 21 default value of 10 is used. 22 For high source impedances, this value can be increased to 18 or 34. 23 For less ADC accuracy and/or slower CCLK frequencies this value may be 24 decreased to 6. See section 6.0 INPUT SOURCE RESISTANCE in the 25 datasheet for details. 26 27Example: 28adc@0 { 29 compatible = "ti,adc12138"; 30 reg = <0>; 31 interrupts = <28 IRQ_TYPE_EDGE_RISING>; 32 interrupt-parent = <&gpio1>; 33 clocks = <&cclk>; 34 vref-p-supply = <&ldo4_reg>; 35 spi-max-frequency = <5000000>; 36 ti,acquisition-time = <6>; 37}; 38