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authorGuenter Roeck <linux@roeck-us.net>2019-11-23 11:11:26 -0800
committerGuenter Roeck <linux@roeck-us.net>2020-01-23 13:15:09 -0800
commitd21ed22ba7b110746315dff56f62d76352ac5437 (patch)
tree852ae52c799dc27539db6895a804cccab716dc95 /Documentation/hwmon
parent002c6b545b85676539add33add8aa7f1f49cbfff (diff)
downloadlinux-d21ed22ba7b110746315dff56f62d76352ac5437.tar.bz2
hwmon: Driver for MAX31730
MAX31730 is a 3-Channel Remote Temperature Sensor. 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/max31730.rst44
2 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 43cc605741ea..b91da3acccb9 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -108,6 +108,7 @@ Hardware Monitoring Kernel Drivers
max197
max20751
max31722
+ max31730
max31785
max31790
max34440
diff --git a/Documentation/hwmon/max31730.rst b/Documentation/hwmon/max31730.rst
new file mode 100644
index 000000000000..def0de19dbd2
--- /dev/null
+++ b/Documentation/hwmon/max31730.rst
@@ -0,0 +1,44 @@
+Kernel driver max31790
+======================
+
+Supported chips:
+
+ * Maxim MAX31730
+
+ Prefix: 'max31730'
+
+ Addresses scanned: 0x1c, 0x1d, 0x1e, 0x1f, 0x4c, 0x4d, 0x4e, 0x4f
+
+ Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX31730.pdf
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+This driver implements support for Maxim MAX31730.
+
+The MAX31730 temperature sensor monitors its own temperature and the
+temperatures of three external diode-connected transistors. The operating
+supply voltage is from 3.0V to 3.6V. Resistance cancellation compensates
+for high series resistance in circuit-board traces and the external thermal
+diode, while beta compensation corrects for temperature-measurement
+errors due to low-beta sensing transistors.
+
+
+Sysfs entries
+-------------
+
+=================== == =======================================================
+temp[1-4]_enable RW Temperature enable/disable
+ Set to 0 to enable channel, 0 to disable
+temp[1-4]_input RO Temperature input
+temp[2-4]_fault RO Fault indicator for remote channels
+temp[1-4]_max RW Maximum temperature
+temp[1-4]_max_alarm RW Maximum temperature alarm
+temp[1-4]_min RW Minimum temperature. Common for all channels.
+ Only temp1_min is writeable.
+temp[1-4]_min_alarm RO Minimum temperature alarm
+temp[2-4]_offset RW Temperature offset for remote channels
+=================== == =======================================================