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authorClemens Ladisch <clemens@ladisch.de>2011-02-16 08:02:08 -0500
committerGuenter Roeck <guenter.roeck@ericsson.com>2011-02-16 08:18:32 -0800
commitd5622f5b6c4671d1588ccc9056705366d4eb312a (patch)
treea1cf8a6ad056f4e13be6185399c1b732984e364c /Documentation
parente866729605a43a739fc56023a8530b07a93d3458 (diff)
downloadlinux-linaro-android-d5622f5b6c4671d1588ccc9056705366d4eb312a.tar.gz
hwmon: (jc42) more helpful documentation
The documentation lists standard numbers and chip names in excruciating detail, but that's all it does. To help mere mortals in deciding whether to enable this driver, mention what this sensor is for and in which systems it might be found. Also add a link to the actual JC 42.4 specification. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: stable@kernel.org Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/hwmon/jc429
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/hwmon/jc42 b/Documentation/hwmon/jc42
index 0e76ef12e4c..2a0924003f9 100644
--- a/Documentation/hwmon/jc42
+++ b/Documentation/hwmon/jc42
@@ -51,7 +51,8 @@ Supported chips:
* JEDEC JC 42.4 compliant temperature sensor chips
Prefix: 'jc42'
Addresses scanned: I2C 0x18 - 0x1f
- Datasheet: -
+ Datasheet:
+ http://www.jedec.org/sites/default/files/docs/4_01_04R19.pdf
Author:
Guenter Roeck <guenter.roeck@ericsson.com>
@@ -60,7 +61,11 @@ Author:
Description
-----------
-This driver implements support for JEDEC JC 42.4 compliant temperature sensors.
+This driver implements support for JEDEC JC 42.4 compliant temperature sensors,
+which are used on many DDR3 memory modules for mobile devices and servers. Some
+systems use the sensor to prevent memory overheating by automatically throttling
+the memory controller.
+
The driver auto-detects the chips listed above, but can be manually instantiated
to support other JC 42.4 compliant chips.