linux-kernel - [PATCH v8 2/6] iio: proximity: rfd77402: Align polling timeout with datasheet

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Message-Id: <20260128-b4-rfd77402_v5-v8-2-36388fe7b95e@gmail.com>
Date: Wed, 28 Jan 2026 23:21:49 +0530
From: Shrikant Raskar via B4 Relay <devnull+raskar.shree97.gmail.com@...nel.org>
To: Jonathan Cameron <jic23@...nel.org>, 
 David Lechner <dlechner@...libre.com>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>
Cc: skhan@...uxfoundation.org, david.hunter.linux@...il.com, 
 raskar.shree97@...il.com, linux-iio@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v8 2/6] iio: proximity: rfd77402: Align polling timeout
 with datasheet

From: Shrikant Raskar <raskar.shree97@...il.com>

Update the polling delay to use a 100 ms timeout, as specified
in the RFD77402 datasheet.

Signed-off-by: Shrikant Raskar <raskar.shree97@...il.com>
---
 drivers/iio/proximity/rfd77402.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/proximity/rfd77402.c b/drivers/iio/proximity/rfd77402.c
index 69cc1505b964..8f7debf0e61f 100644
--- a/drivers/iio/proximity/rfd77402.c
+++ b/drivers/iio/proximity/rfd77402.c
@@ -132,7 +132,11 @@ static int rfd77402_measure(struct i2c_client *client)
 			goto err;
 		if (ret & RFD77402_ICSR_RESULT)
 			break;
-		msleep(20);
+		/*
+		 * As per RFD77402 datasheet section '3.1.1 Single Measure',
+		 * the suggested timeout value for single measure is 100ms.
+		 */
+		msleep(10);
 	}
 
 	if (tries < 0) {

-- 
2.43.0