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Tue, 02 Sep 2025 05:05:52 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 02 Sep 2025 20:05:47 +0800 Message-Id: From: "Javier Carrasco" Subject: Re: [PATCH v2 1/2] iio: humditiy: hdc3020: fix units for temperature and humidity measurement Cc: "Jonathan Cameron" , , , "Chris Lesiak" To: , "Li peiyu" <579lpy@gmail.com>, "Jonathan Cameron" , "David Lechner" , =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , "Dimitri Fedrau" X-Mailer: aerc 0.20.1-4-g02324e9d9cab References: <20250901-hdc3020-units-fix-v2-0-082038a15917@liebherr.com> <20250901-hdc3020-units-fix-v2-1-082038a15917@liebherr.com> In-Reply-To: <20250901-hdc3020-units-fix-v2-1-082038a15917@liebherr.com> On Tue Sep 2, 2025 at 1:51 AM CST, Dimitri Fedrau via B4 Relay wrote: > From: Dimitri Fedrau > > According to the ABI the units after application of scale and offset are > milli degrees for temperature measurements and milli percent for relative > humidity measurements. Currently the resulting units are degree celsius f= or > temperature measurements and percent for relative humidity measurements. > Change scale factor to fix this issue. > > Fixes: c9180b8e39be ("iio: humidity: Add driver for ti HDC302x humidity s= ensors") > Reported-by: Chris Lesiak > Suggested-by: Chris Lesiak > Signed-off-by: Dimitri Fedrau > --- > drivers/iio/humidity/hdc3020.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/iio/humidity/hdc3020.c b/drivers/iio/humidity/hdc302= 0.c > index ffb25596d3a8bad01d1f84a9a972561266f65d76..8aa567d9aded9cab461f1f905= b6b5ada721ba2f0 100644 > --- a/drivers/iio/humidity/hdc3020.c > +++ b/drivers/iio/humidity/hdc3020.c > @@ -301,9 +301,9 @@ static int hdc3020_read_raw(struct iio_dev *indio_dev= , > case IIO_CHAN_INFO_SCALE: > *val2 =3D 65536; > if (chan->type =3D=3D IIO_TEMP) > - *val =3D 175; > + *val =3D 175 * MILLI; > else > - *val =3D 100; > + *val =3D 100 * MILLI; > return IIO_VAL_FRACTIONAL; > =20 > case IIO_CHAN_INFO_OFFSET: Reviewed-by: Javier Carrasco