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hwmon: (jc42) more helpful documentation

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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>
This commit is contained in:
Clemens Ladisch 2011-02-16 08:02:08 -05:00 committed by Guenter Roeck
parent e866729605
commit d5622f5b6c
2 changed files with 13 additions and 7 deletions
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9
Documentation/hwmon/jc42
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@ -51,7 +51,8 @@ Supported chips:
* JEDEC JC 42.4 compliant temperature sensor chips * JEDEC JC 42.4 compliant temperature sensor chips
Prefix: 'jc42' Prefix: 'jc42'
Addresses scanned: I2C 0x18 - 0x1f Addresses scanned: I2C 0x18 - 0x1f
Datasheet: - Datasheet:
http://www.jedec.org/sites/default/files/docs/4_01_04R19.pdf
Author: Author:
Guenter Roeck <guenter.roeck@ericsson.com> Guenter Roeck <guenter.roeck@ericsson.com>
@ -60,7 +61,11 @@ Author:
Description 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 The driver auto-detects the chips listed above, but can be manually instantiated
to support other JC 42.4 compliant chips. to support other JC 42.4 compliant chips.

11
drivers/hwmon/Kconfig
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@ -455,13 +455,14 @@ config SENSORS_JZ4740
called jz4740-hwmon. called jz4740-hwmon.
config SENSORS_JC42 config SENSORS_JC42
tristate "JEDEC JC42.4 compliant temperature sensors" tristate "JEDEC JC42.4 compliant memory module temperature sensors"
depends on I2C depends on I2C
help help
If you say yes here you get support for Jedec JC42.4 compliant If you say yes here, you get support for JEDEC JC42.4 compliant
temperature sensors. Support will include, but not be limited to, temperature sensors, which are used on many DDR3 memory modules for
ADT7408, CAT34TS02,, CAT6095, MAX6604, MCP9805, MCP98242, MCP98243, mobile devices and servers. Support will include, but not be limited
MCP9843, SE97, SE98, STTS424, TSE2002B3, and TS3000B3. to, ADT7408, CAT34TS02, CAT6095, MAX6604, MCP9805, MCP98242, MCP98243,
MCP9843, SE97, SE98, STTS424(E), TSE2002B3, and TS3000B3.
This driver can also be built as a module. If so, the module This driver can also be built as a module. If so, the module
will be called jc42. will be called jc42.