What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration
KernelVersion: 5.5
Contact:	linux-iio@vger.kernel.org
Description:
		This attribute, if available, initiates the system calibration procedure. This is done on a
		single channel at a time. Write '1' to start the calibration.

What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode_available
KernelVersion: 5.5
Contact:	linux-iio@vger.kernel.org
Description:
		This attribute, if available, returns a list with the possible calibration modes.
		There are two available options:
		"zero_scale" - calibrate to zero scale
		"full_scale" - calibrate to full scale

What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode
KernelVersion: 5.5
Contact:	linux-iio@vger.kernel.org
Description:
		This attribute, if available, sets up the calibration mode used in the system calibration
		procedure. Reading returns the current calibration mode.
		Writing sets the system calibration mode.