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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-09-22 19:54:53 (GMT)
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-09-22 20:01:40 (GMT)
commitae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch)
tree3c2086ab67398a019089a47ca3f362a4bc6db74f /Documentation/hwmon/tmp421
parent34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff)
parent9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff)
downloadlinux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz
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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