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authorJohn Muir <john@jmuir.com>2016-12-01 18:32:41 -0800
committerGuenter Roeck <linux@roeck-us.net>2016-12-09 21:54:25 -0800
commit66e1c91713396734f8cf778a2fc5212876c04bc0 (patch)
treebcc4661fa3206bb761cc5391f99d862505fabea3 /Documentation/hwmon
parent3a412d5e4a1c831723d0aaf305f1cf9a78ad9c90 (diff)
downloadlinux-66e1c91713396734f8cf778a2fc5212876c04bc0.tar.bz2
hwmon: Add Texas Instruments TMP108 temperature sensor driver.
Add support for the TI TMP108 temperature sensor with some device configuration parameters. Signed-off-by: John Muir <john@jmuir.com> [groeck: Initialize of_match_table] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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+Kernel driver tmp108
+====================
+
+Supported chips:
+ * Texas Instruments TMP108
+ Prefix: 'tmp108'
+ Addresses scanned: none
+ Datasheet: http://www.ti.com/product/tmp108
+
+Author:
+ John Muir <john@jmuir.com>
+
+Description
+-----------
+
+The Texas Instruments TMP108 implements one temperature sensor. An alert pin
+can be set when temperatures exceed minimum or maximum values plus or minus a
+hysteresis value. (This driver does not support interrupts for the alert pin,
+and the device runs in comparator mode.)
+
+The sensor is accurate to 0.75C over the range of -25 to +85 C, and to 1.0
+degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The
+operating temperature has a minimum of -55 C and a maximum of +150 C.
+Hysteresis values can be set to 0, 1, 2, or 4C.
+
+The TMP108 has a programmable update rate that can select between 8, 4, 1, and
+0.5 Hz.
+
+By default the TMP108 reads the temperature continuously. To conserve power,
+the TMP108 has a one-shot mode where the device is normally shut-down. When a
+one shot is requested the temperature is read, the result can be retrieved,
+and then the device is shut down automatically. (This driver only supports
+continuous mode.)
+
+The driver provides the common sysfs-interface for temperatures (see
+Documentation/hwmon/sysfs-interface under Temperatures).