From: Stefano Manni <stefano.manni@gmail.com>
Date: Thu, 7 Aug 2025 07:48:50 +0000 (+0200)
Subject: iio: adc: ad799x: add reference voltage to ad7994
X-Git-Tag: v6.18-rc1~74^2~7^2~146
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b515c701bbdfa453e2e57ae542863f1baf2c35b1;p=thirdparty%2Fkernel%2Fstable.git

iio: adc: ad799x: add reference voltage to ad7994

AD7994 supports external reference voltage on REFIN
pin so if a vref-supply has been defined it shall be
used.

Signed-off-by: Stefano Manni <stefano.manni@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250807074850.130831-3-stefano.manni@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index f645995b09297..108bb22162ef1 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -692,6 +692,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
 	},
 	[ad7994] = {
 		.num_channels = 5,
+		.has_vref = true,
 		.noirq_config = {
 			.channel = {
 				AD799X_CHANNEL(0, 12),