linux-kernel - [PATCH v3 2/4] hwmon: (sht21) Add support for SHT20, SHT25 chips

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Message-Id: <20250907-sht2x-v3-2-bf846bd1534b@gmail.com>
Date: Sun, 07 Sep 2025 20:33:49 -0500
From: Kurt Borja <kuurtb@...il.com>
To: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>, 
 Jonathan Corbet <corbet@....net>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-hwmon@...r.kernel.org, linux-doc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Kurt Borja <kuurtb@...il.com>, stable@...r.kernel.org
Subject: [PATCH v3 2/4] hwmon: (sht21) Add support for SHT20, SHT25 chips

All sht2x chips share the same communication protocol so add support for
them.

Cc: stable@...r.kernel.org
Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
 Documentation/hwmon/sht21.rst | 10 ++++++++++
 drivers/hwmon/Kconfig         |  4 ++--
 drivers/hwmon/sht21.c         |  2 ++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/Documentation/hwmon/sht21.rst b/Documentation/hwmon/sht21.rst
index 9f66cd51b45dc4b89ce757d2209445478de046cd..d20e8a460ba6c7c8452bcdce68a1fce963413640 100644
--- a/Documentation/hwmon/sht21.rst
+++ b/Documentation/hwmon/sht21.rst
@@ -3,6 +3,16 @@ Kernel driver sht21
 
 Supported chips:
 
+  * Sensirion SHT20
+
+    Prefix: 'sht20'
+
+    Addresses scanned: none
+
+    Datasheet: Publicly available at the Sensirion website
+
+    https://www.sensirion.com/file/datasheet_sht20
+
   * Sensirion SHT21
 
     Prefix: 'sht21'
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 9d28fcf7cd2a6f9e2f54694a717bd85ff4047b46..90dc8051418689e7a92293df15ce35cd822c77ff 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1930,8 +1930,8 @@ config SENSORS_SHT21
 	tristate "Sensiron humidity and temperature sensors. SHT21 and compat."
 	depends on I2C
 	help
-	  If you say yes here you get support for the Sensiron SHT21, SHT25
-	  humidity and temperature sensors.
+	  If you say yes here you get support for the Sensiron SHT20, SHT21,
+	  SHT25 humidity and temperature sensors.
 
 	  This driver can also be built as a module. If so, the module
 	  will be called sht21.
diff --git a/drivers/hwmon/sht21.c b/drivers/hwmon/sht21.c
index 97327313529b467ed89d8f6b06c2d78efd54efbf..97d71e3361e9d7f0512880149ba6479601b2fc0c 100644
--- a/drivers/hwmon/sht21.c
+++ b/drivers/hwmon/sht21.c
@@ -275,7 +275,9 @@ static int sht21_probe(struct i2c_client *client)
 
 /* Device ID table */
 static const struct i2c_device_id sht21_id[] = {
+	{ "sht20" },
 	{ "sht21" },
+	{ "sht25" },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, sht21_id);

-- 
2.51.0