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authorEmil Renner Berthing <kernel@esmil.dk>2023-03-21 03:26:44 +0100
committerGuenter Roeck <linux@roeck-us.net>2023-04-19 16:08:39 +0200
commit7f2958e845d2c8bf1100dc088dbdc31af2a80fd0 (patch)
tree36168ed6f1016a5122031710c182dc3c4ec06ee6 /Documentation/hwmon
parentdt-bindings: hwmon: Add starfive,jh71x0-temp (diff)
downloadlinux-7f2958e845d2c8bf1100dc088dbdc31af2a80fd0.tar.xz
linux-7f2958e845d2c8bf1100dc088dbdc31af2a80fd0.zip
hwmon: (sfctemp) Add StarFive JH71x0 temperature sensor
Add driver for the StarFive JH71x0 temperature sensor. You can enable/disable it and read temperature in milli Celcius through sysfs. Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Co-developed-by: Samin Guo <samin.guo@starfivetech.com> Signed-off-by: Samin Guo <samin.guo@starfivetech.com> Signed-off-by: Hal Feng <hal.feng@starfivetech.com> Link: https://lore.kernel.org/r/20230321022644.107027-3-hal.feng@starfivetech.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/index.rst1
-rw-r--r--Documentation/hwmon/sfctemp.rst33
2 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index f1fe75f596a5..d72bb1df6431 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -184,6 +184,7 @@ Hardware Monitoring Kernel Drivers
sch5627
sch5636
scpi-hwmon
+ sfctemp
sht15
sht21
sht3x
diff --git a/Documentation/hwmon/sfctemp.rst b/Documentation/hwmon/sfctemp.rst
new file mode 100644
index 000000000000..9fbd5bb1f356
--- /dev/null
+++ b/Documentation/hwmon/sfctemp.rst
@@ -0,0 +1,33 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver sfctemp
+=====================
+
+Supported chips:
+ - StarFive JH7100
+ - StarFive JH7110
+
+Authors:
+ - Emil Renner Berthing <kernel@esmil.dk>
+
+Description
+-----------
+
+This driver adds support for reading the built-in temperature sensor on the
+JH7100 and JH7110 RISC-V SoCs by StarFive Technology Co. Ltd.
+
+``sysfs`` interface
+-------------------
+
+The temperature sensor can be enabled, disabled and queried via the standard
+hwmon interface in sysfs under ``/sys/class/hwmon/hwmonX`` for some value of
+``X``:
+
+================ ==== =============================================
+Name Perm Description
+================ ==== =============================================
+temp1_enable RW Enable or disable temperature sensor.
+ Automatically enabled by the driver,
+ but may be disabled to save power.
+temp1_input RO Temperature reading in milli-degrees Celsius.
+================ ==== =============================================