[PATCH v2 03/12] iio: adc: at91-sama5d2_adc: adapt the driver for sama7d65

Varshini Rajendran varshini.rajendran at microchip.com
Tue Jun 23 03:59:35 PDT 2026


Add support for sama7d65 ADC. The differences are highlighted with the
compatible. The calibration data layout is the main difference.

Signed-off-by: Varshini Rajendran <varshini.rajendran at microchip.com>
---
 drivers/iio/adc/at91-sama5d2_adc.c | 31 ++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index b569d175f4c3..237d339f342a 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -530,6 +530,16 @@ static const struct at91_adc_temp_calib_layout sama7g5_temp_calib = {
 	.p1_div = 1,
 };
 
+static const struct at91_adc_temp_calib_layout sama7d65_temp_calib = {
+	.tag_idx = 1,
+	.p1_idx = 3,
+	.p4_idx = 2,
+	.p6_idx = 5,
+	.min_len = 11,
+	.p1_mul = 1,
+	.p1_div = 1000,
+};
+
 /* Temperature sensor calibration - Vtemp voltage sensitivity to temperature. */
 #define AT91_ADC_TS_VTEMP_DT		(2080U)
 
@@ -768,6 +778,24 @@ static const struct at91_adc_platform sama7g5_platform = {
 	.temp_calib_layout = &sama7g5_temp_calib,
 };
 
+static const struct at91_adc_platform sama7d65_platform = {
+	.layout = &sama7g5_layout,
+	.adc_channels = &at91_sama7g5_adc_channels,
+	.nr_channels = AT91_SAMA7G5_SINGLE_CHAN_CNT +
+		       AT91_SAMA7G5_DIFF_CHAN_CNT +
+		       AT91_SAMA7G5_TEMP_CHAN_CNT,
+	.max_channels = ARRAY_SIZE(at91_sama7g5_adc_channels),
+	.max_index = AT91_SAMA7G5_MAX_CHAN_IDX,
+	.hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT,
+	.osr_mask = GENMASK(18, 16),
+	.oversampling_avail = { 1, 4, 16, 64, 256, },
+	.oversampling_avail_no = 5,
+	.chan_realbits = 16,
+	.temp_sensor = true,
+	.temp_chan = AT91_SAMA7G5_ADC_TEMP_CHANNEL,
+	.temp_calib_layout = &sama7d65_temp_calib,
+};
+
 static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan)
 {
 	int i;
@@ -2638,6 +2666,9 @@ static const struct of_device_id at91_adc_dt_match[] = {
 	}, {
 		.compatible = "microchip,sama7g5-adc",
 		.data = (const void *)&sama7g5_platform,
+	}, {
+		.compatible = "microchip,sama7d65-adc",
+		.data = (const void *)&sama7d65_platform,
 	}, {
 		/* sentinel */
 	}
-- 
2.34.1




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