Let me confirm about ADC2 in i.MX6ULL.
In imx6ull.dts, it defined only adc1.
Based on the following thread, the customer tried to forcibly operate adc 2, it became Timeout for adc calibration, and it got hung up even when accessing sysfs.
* imx6ul adc2 vf610-adc issue: Timeout for adc calibration
adc2 is dedicated to tsc and can not be used as a general purpose ADC like adc1.
Am I correct ?
If our understanding is wrong, would you tell me how to use it as a gereral ADC like adc1 ?