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+ads7828 properties
+
+Required properties:
+- compatible: Should be one of
+ ti,ads7828
+ ti,ads7830
+- reg: I2C address
+
+Optional properties:
+
+- ti,differential-input
+ Set to use the device in differential mode.
+- vref-supply
+ The external reference on the device is set to this regulators output. If it
+ does not exists the internal reference will be used and output by the ads78xx
+ on the "external vref" pin.
+
+ Example ADS7828 node:
+
+ ads7828: ads@48 {
+ comatible = "ti,ads7828";
+ reg = <0x48>;
+ vref-supply = <&vref>;
+ ti,differential-input;
+ };