hwmon: (jc42) more helpful documentation

[mv-sheeva.git] / Documentation / hwmon / jc42

diff --git a/Documentation/hwmon/jc42 b/Documentation/hwmon/jc42
index 0e76ef12e4c60d996fde89cef341f5dc05163160..2a0924003f9255a4b0edf53f561eb30a9bc1c11e 100644 (file)
--- 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.