iio: adc: ad9361: Update TX quad calibration thresholds

Increase thresholds for LO leakage and quadrature correction. For the previous value (0x1), an unexpected behaviour was discovered: without any setting change, the algorithm could converge once but fail second time it was run. Signed-off-by: Dragos Bogdan <[email protected]>
analogdevicesinc · Oct 19, 2020 · d99527a · d99527a
1 parent 24558bd
commit d99527a
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/iio/adc/ad9361.c b/drivers/iio/adc/ad9361.c
@@ -2897,8 +2897,8 @@ static int ad9361_tx_quad_calib(struct ad9361_rf_phy *phy,
 	ad9361_spi_write(spi, REG_QUAD_CAL_COUNT, 0xFF);
 	ad9361_spi_write(spi, REG_KEXP_1, KEXP_TX(1) | KEXP_TX_COMP(3) |
 			 KEXP_DC_I(3) | KEXP_DC_Q(3));
-	ad9361_spi_write(spi, REG_MAG_FTEST_THRESH, 0x01);
-	ad9361_spi_write(spi, REG_MAG_FTEST_THRESH_2, 0x01);
+	ad9361_spi_write(spi, REG_MAG_FTEST_THRESH, 0x03);
+	ad9361_spi_write(spi, REG_MAG_FTEST_THRESH_2, 0x03);
 
 	if (st->tx_quad_lpf_tia_match < 0) /* set in ad9361_load_gt() */
 		dev_err(dev, "failed to find suitable LPF TIA value in gain table\n");