diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c
index ee3e586c2c9e..878c1a83a2c6 100644
--- a/drivers/iio/adc/ad7173.c
+++ b/drivers/iio/adc/ad7173.c
@@ -732,6 +732,21 @@ static int ad7173_write_raw(struct iio_dev *indio_dev,
 		return ret;
 
 	switch (info) {
+	/*
+	 * This attribute sets the sampling frequency for each channel individually.
+	 * There are no issues for raw or buffered reads of an individual channel.
+	 *
+	 * When multiple channels are enabled in buffered mode, the effective
+	 * sampling rate of a channel is lowered in correlation to the number
+	 * of channels enabled and the sampling rate of the other channels.
+	 *
+	 * Example: 3 channels enabled with rates CH1:6211sps CH2,CH3:10sps
+	 * While the reading of CH1 takes only 0.16ms, the reading of CH2 and CH3
+	 * will take 100ms each.
+	 *
+	 * This will cause the reading of CH1 to be actually done once every
+	 * 200.16ms, an effective rate of 4.99sps.
+	 */
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		freq = val * MILLI + val2 / MILLI;
 		for (i = st->info->odr_start_value; i < st->info->num_sinc5_data_rates - 1; i++)