.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
}
-static struct iio_chan_spec berlin2_adc_channels[] = {
+static const struct iio_chan_spec berlin2_adc_channels[] = {
BERLIN2_ADC_CHANNEL(0, IIO_VOLTAGE), /* external input */
BERLIN2_ADC_CHANNEL(1, IIO_VOLTAGE), /* external input */
BERLIN2_ADC_CHANNEL(2, IIO_VOLTAGE), /* external input */