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Sat, 19 Apr 2025 05:54:16 -0700 (PDT) Received: from theriatric.mshome.net ([73.123.232.110]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-47ae9c3b485sm21296421cf.27.2025.04.19.05.54.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Apr 2025 05:54:15 -0700 (PDT) From: Gabriel Shahrouzi To: himanshujha199640@gmail.com, jic23@kernel.org, lars@metafoo.de, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Michael.Hennerich@analog.com Cc: gshahrouzi@gmail.com, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, stable@vger.kernel.org Subject: [PATCH] iio: adis16201: Correct accelerometer scale factor Date: Sat, 19 Apr 2025 08:54:13 -0400 Message-ID: <20250419125413.679290-1-gshahrouzi@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel-mentees@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The IIO_CHAN_INFO_SCALE previously reported for accelerometer channels used 0.4624 mg/LSB. This value matches the datasheet specification for the offset calibration registers (X/YACCL_OFFS_REG, pg 18). However, the scale should reflect the sensor output data registers (X/YACCL_OUT, pg 15, Tables 7 & 8), which use 0.4625 mg/LSB. This is also consistent with the typical sensitivity in Table 1 (1 / 2.162 ≈ 0.4625). Fixes: 57f9386405a2 ("Staging: iio: accel: adis16201: Add comments about units in read_raw()") Cc: stable@vger.kernel.org Signed-off-by: Gabriel Shahrouzi --- drivers/iio/accel/adis16201.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c index 8601b9a8b8e75..982b33f6eccac 100644 --- a/drivers/iio/accel/adis16201.c +++ b/drivers/iio/accel/adis16201.c @@ -133,7 +133,7 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, * 1 LSB represents 0.244 mg. */ *val = 0; - *val2 = IIO_G_TO_M_S_2(462400); + *val2 = IIO_G_TO_M_S_2(462500); return IIO_VAL_INT_PLUS_NANO; case IIO_INCLI: *val = 0; -- 2.43.0