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authorAndre Prendel <andre.prendel@gmx.de>2009-09-15 17:18:12 +0200
committerJean Delvare <khali@linux-fr.org>2009-09-15 17:18:12 +0200
commit1915fb70fa23230894cd35d98fcac5a168ec5c23 (patch)
tree24bbad9393c4d58acab0de0b2f5e8e239aec58d9 /Documentation/hwmon
parent9410700b881f867a50dd8dc3204372fd9dccd8f8 (diff)
hwmon: (tmp421) Add documentation
Add documentation for the tmp421 driver. Signed-off-by: Andre Prendel <andre.prendel@gmx.de> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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+Kernel driver tmp421
+====================
+
+Supported chips:
+ * Texas Instruments TMP421
+ Prefix: 'tmp421'
+ Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
+ Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
+ * Texas Instruments TMP422
+ Prefix: 'tmp422'
+ Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
+ Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
+ * Texas Instruments TMP423
+ Prefix: 'tmp423'
+ Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
+ Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
+
+Authors:
+ Andre Prendel <andre.prendel@gmx.de>
+
+Description
+-----------
+
+This driver implements support for Texas Instruments TMP421, TMP422
+and TMP423 temperature sensor chips. These chips implement one local
+and up to one (TMP421), up to two (TMP422) or up to three (TMP423)
+remote sensors. Temperature is measured in degrees Celsius. The chips
+are wired over I2C/SMBus and specified over a temperature range of -40
+to +125 degrees Celsius. Resolution for both the local and remote
+channels is 0.0625 degree C.
+
+The chips support only temperature measurement. The driver exports
+the temperature values via the following sysfs files:
+
+temp[1-4]_input
+temp[2-4]_fault