linux-kernel - [PATCH] iio: adc: ad7380: fix missing max_conversion_rate

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Message-Id: <20250811-iio-adc-ad7380-fix-missing-max_conversion_rate_hs-on-ad4381-4-v1-1-ffb728d7a71c@baylibre.com>
Date: Mon, 11 Aug 2025 13:32:31 -0500
From: David Lechner <dlechner@...libre.com>
To: Michael Hennerich <michael.hennerich@...log.com>, 
 Nuno Sá <nuno.sa@...log.com>, 
 David Lechner <dlechner@...libre.com>, Jonathan Cameron <jic23@...nel.org>, 
 Andy Shevchenko <andy@...nel.org>, 
 Angelo Dureghello <adureghello@...libre.com>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] iio: adc: ad7380: fix missing max_conversion_rate_hz on
 adaq4381-4

Add max_conversion_rate_hz to the chip info for "adaq4381-4". Without
this, the driver fails to probe because it tries to set the initial
sample rate to 0 Hz, which is not valid.

Fixes: bbeaec81a03e ("iio: ad7380: add support for SPI offload")
Signed-off-by: David Lechner <dlechner@...libre.com>
---
 drivers/iio/adc/ad7380.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c
index 6f7034b6c266bd6075e0e2fd8d567c4490171e7b..fa251dc1aae6ab0a0d36792fa37b2cc22b99dfe6 100644
--- a/drivers/iio/adc/ad7380.c
+++ b/drivers/iio/adc/ad7380.c
@@ -873,6 +873,7 @@ static const struct ad7380_chip_info adaq4381_4_chip_info = {
 	.has_hardware_gain = true,
 	.available_scan_masks = ad7380_4_channel_scan_masks,
 	.timing_specs = &ad7380_4_timing,
+	.max_conversion_rate_hz = 4 * MEGA,
 };
 
 static const struct spi_offload_config ad7380_offload_config = {

---
base-commit: 80e8c3730645f6e097a79e99e658201530bc2881
change-id: 20250811-iio-adc-ad7380-fix-missing-max_conversion_rate_hs-on-ad4381-4-98e314112d71

Best regards,
-- 
David Lechner <dlechner@...libre.com>