1* ST SPEAr ADC device driver
2
3Required properties:
4- compatible: Should be "st,spear600-adc"
5- reg: Address and length of the register set for the device
6- interrupt-parent: Should be the phandle for the interrupt controller
7  that services interrupts for this device
8- interrupts: Should contain the ADC interrupt
9- sampling-frequency: Default sampling frequency
10
11Optional properties:
12- vref-external: External voltage reference in milli-volts. If omitted
13  the internal voltage reference will be used.
14- average-samples: Number of samples to generate an average value. If
15  omitted, single data conversion will be used.
16
17Examples:
18
19	adc: adc@d8200000 {
20		compatible = "st,spear600-adc";
21		reg = <0xd8200000 0x1000>;
22		interrupt-parent = <&vic1>;
23		interrupts = <6>;
24		sampling-frequency = <5000000>;
25		vref-external = <2500>;	/* 2.5V VRef */
26	};
27