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authorManuel Lauss <mano@roarinelk.homelinux.net>2009-01-07 16:37:34 +0100
committerJean Delvare <khali@linux-fr.org>2009-01-07 16:37:34 +0100
commitc8ac32e4711639c81e5f4d4cd78c8f21675a2bae (patch)
tree3ec6572d74cf2fc824a8176aa5f3adeac04002ed /Documentation/hwmon/lm70
parenthwmon: (lm70) Code streamlining and cleanup (diff)
downloadlinux-c8ac32e4711639c81e5f4d4cd78c8f21675a2bae.tar.xz
linux-c8ac32e4711639c81e5f4d4cd78c8f21675a2bae.zip
hwmon: (lm70) Add TI TMP121 support
The Texas Instruments TMP121 is a SPI temperature sensor very similar to the LM70, with slightly higher resolution. This patch extends the LM70 driver to support the TMP121. The TMP123 differs in pin assign- ment. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation/hwmon/lm70')
-rw-r--r--Documentation/hwmon/lm708
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/hwmon/lm70 b/Documentation/hwmon/lm70
index b8d1a521e689..0d240291e3cc 100644
--- a/Documentation/hwmon/lm70
+++ b/Documentation/hwmon/lm70
@@ -1,9 +1,11 @@
Kernel driver lm70
==================
-Supported chip:
+Supported chips:
* National Semiconductor LM70
Datasheet: http://www.national.com/pf/LM/LM70.html
+ * Texas Instruments TMP121/TMP123
+ Information: http://focus.ti.com/docs/prod/folders/print/tmp121.html
Author:
Kaiwan N Billimoria <kaiwan@designergraphix.com>
@@ -29,6 +31,10 @@ As a real (in-tree) example of this "SPI protocol driver" interfacing
with a "SPI master controller driver", see drivers/spi/spi_lm70llp.c
and its associated documentation.
+The TMP121/TMP123 are very similar; main differences are 4 wire SPI inter-
+face (read only) and 13-bit temperature data (0.0625 degrees celsius reso-
+lution).
+
Thanks to
---------
Jean Delvare <khali@linux-fr.org> for mentoring the hwmon-side driver