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- interrupts: Should contain the ADC interrupt
7- sampling-frequency: Default sampling frequency
8
9Optional properties:
10- vref-external: External voltage reference in milli-volts. If omitted
11  the internal voltage reference will be used.
12- average-samples: Number of samples to generate an average value. If
13  omitted, single data conversion will be used.
14
15Examples:
16
17	adc: adc@d8200000 {
18		compatible = "st,spear600-adc";
19		reg = <0xd8200000 0x1000>;
20		interrupt-parent = <&vic1>;
21		interrupts = <6>;
22		sampling-frequency = <5000000>;
23		vref-external = <2500>;	/* 2.5V VRef */
24	};
25