[iMX93] ADC calibration failed

[charleshuang]

Hi NXP Team,

I just enable 'adc1' in our device tree, but the system reponse the calibration failed.

What could be the reason?

&adc1 {
vref-supply = <&reg_vref_1v8>;
status = "okay";
};

root@imx93afee320a1:/sys/bus/iio/devices# dmesg| grep adc
[ 1.565952] Bluetooth: HCI UART protocol Broadcom registered
[ 1.719162] imx93-adc 44530000.adc: ADC calibration failed!
[ 1.724775] imx93-adc: probe of 44530000.adc failed with error -11
[ 1.842125] can: broadcast manager protocol

[Rita_Wang]

Which version BSP are you using? Are you using the NXP 93EVK BOARD?

[RainChou]

Hello, NXP team. I have encountered the same issue. My IMX93 ADC also shows the errors 'imx93-adc 44530000.adc: ADC calibration failed!' and 'imx93-adc: probe of 44530000.adc failed with error -11' during initialization. I am using Advantech's IMX93ROM-2820A1 core board.