Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754369Ab1BPNBY (ORCPT ); Wed, 16 Feb 2011 08:01:24 -0500 Received: from out1.smtp.messagingengine.com ([66.111.4.25]:42185 "EHLO out1.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752100Ab1BPNBV (ORCPT ); Wed, 16 Feb 2011 08:01:21 -0500 X-Sasl-enc: UGOpGlCwQ/EjXoRJmsOFvFBO9c2zgR3kCfWRvGV30vaW 1297861280 Message-ID: <4D5BCAD0.4080204@ladisch.de> Date: Wed, 16 Feb 2011 14:02:08 +0100 From: Clemens Ladisch User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Guenter Roeck , Jean Delvare CC: lm-sensors@lm-sensors.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] hwmon: (jc42) more helpful documentation References: <4D5BCA87.7010204@ladisch.de> In-Reply-To: <4D5BCA87.7010204@ladisch.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2644 Lines: 65 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 --- Documentation/hwmon/jc42 | 9 +++++++-- drivers/hwmon/Kconfig | 11 ++++++----- 2 files changed, 13 insertions(+), 7 deletions(-) --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -455,13 +455,14 @@ config SENSORS_JZ4740 called jz4740-hwmon. config SENSORS_JC42 - tristate "JEDEC JC42.4 compliant temperature sensors" + tristate "JEDEC JC42.4 compliant memory module temperature sensors" depends on I2C help - If you say yes here you get support for Jedec JC42.4 compliant - temperature sensors. Support will include, but not be limited to, - ADT7408, CAT34TS02,, CAT6095, MAX6604, MCP9805, MCP98242, MCP98243, - MCP9843, SE97, SE98, STTS424, TSE2002B3, and TS3000B3. + If you say yes here, you get support for JEDEC JC42.4 compliant + temperature sensors, which are used on many DDR3 memory modules for + mobile devices and servers. Support will include, but not be limited + 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 will be called jc42. --- 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 @@ -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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/