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hwmon: (sht3x) Document support for GXCAS GXHT30

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The GXCAS GXHT30 is a humidity and temperature sensor that is a
drop-in replacement for and fully software compatible with the
Sensirion SHT30.

It is handled by the "sensirion,sht30" fallback compatible without
any driver changes; manual instantiation works with the existing
sht3x device name. Document the chip as supported.

Signed-off-by: Zaixiang Xu <zaixiang.xu.dev@gmail.com>
Link: https://lore.kernel.org/r/20260713074559.12196-5-zaixiang.xu.dev@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Zaixiang Xu
2026-07-13 15:45:59 +08:00
committed by Guenter Roeck
parent 75186ab25c
commit 622a2dbdc0
2 changed files with 17 additions and 5 deletions
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17
Documentation/hwmon/sht3x.rst
View File

@@ -31,6 +31,14 @@ Supported chips:
Datasheet: https://sensirion.com/media/documents/4B40CEF3/640B2346/Sensirion_Humidity_Sensors_SHT85_Datasheet.pdf
* GXCAS GXHT30
Prefix: 'sht3x'
Addresses scanned: none
Datasheet: https://www.galaxy-cas.com/uploads/files/202509/GXHT30_datasheet_V3.9_20250919170350.pdf
Author:
- David Frey <david.frey@sensirion.com>
@@ -40,9 +48,12 @@ Description
-----------
This driver implements support for the Sensirion SHT3x-DIS, STS3x-DIS and SHT85
series of humidity and temperature sensors. Temperature is measured in degrees
celsius, relative humidity is expressed as a percentage. In the sysfs interface,
all values are scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500.
series of humidity and temperature sensors, as well as the compatible GXCAS
GXHT30. The GXHT30 is a drop-in replacement for the SHT30: instantiate it from
devicetree with the "gxcas,gxht30", "sensirion,sht30" compatibles, or manually
using the sht3x device name. Temperature is measured in degrees celsius,
relative humidity is expressed as a percentage. In the sysfs interface, all
values are scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500.
The device communicates with the I2C protocol. SHT3x sensors can have the I2C
addresses 0x44 or 0x45 (0x4a or 0x4b for sts3x), depending on the wiring. SHT85

5
drivers/hwmon/Kconfig
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@@ -2023,8 +2023,9 @@ config SENSORS_SHT3x
depends on I2C
select CRC8
help
If you say yes here you get support for the Sensiron SHT30, SHT31 and
SHT85 humidity and temperature sensors.
If you say yes here you get support for the Sensiron SHT30, SHT31,
SHT85 and the compatible GXCAS GXHT30 humidity and temperature
sensors.
This driver can also be built as a module. If so, the module
will be called sht3x.