linux-kernel - [PATCH] iio: adc: ad799x: add reference supply for ad7994

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Message-ID: <20250805142423.17710-1-stefano.manni@gmail.com>
Date: Tue,  5 Aug 2025 16:24:23 +0200
From: Stefano Manni <stefano.manni@...il.com>
To: lars@...afoo.de,
	Michael.Hennerich@...log.com,
	jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org
Cc: linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Stefano Manni <stefano.manni@...il.com>
Subject: [PATCH] iio: adc: ad799x: add reference supply for ad7994

AD7994 supports the external reference voltage on pin REFIN.

Signed-off-by: Stefano Manni <stefano.manni@...il.com>
---
 drivers/iio/adc/ad799x.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index 9c02f9199139..e5167dba925f 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -826,7 +826,8 @@ static int ad799x_probe(struct i2c_client *client)
 		 * Use external reference voltage if supported by hardware.
 		 * This is optional if voltage / regulator present, use VCC otherwise.
 		 */
-		if ((st->id == ad7991) || (st->id == ad7995) || (st->id == ad7999)) {
+		if ((st->id == ad7991) || (st->id == ad7995) || (st->id == ad7999)
+			(st->id == ad7994)) {
 			dev_info(&client->dev, "Using external reference voltage\n");
 			extra_config |= AD7991_REF_SEL;
 			ret = regulator_enable(st->vref);
-- 
2.48.1