WM8350_AUXADC_BATT
[WM8350_AUXADC_BATT] = "Battery",
WM8350_NAMED_VOLTAGE(1, WM8350_AUXADC_BATT);
return wm8350_read_auxadc(wm8350, WM8350_AUXADC_BATT, 0, 0)