About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / hwmon / emc2103

Custom Search

Based on kernel version 3.13. Page generated on 2014-01-20 22:03 EST.

1	Kernel driver emc2103
2	======================
4	Supported chips:
5	  * SMSC EMC2103
6	    Addresses scanned: I2C 0x2e
7	    Prefix: 'emc2103'
8	    Datasheet: Not public
10	Authors:
11	        Steve Glendinning <steve.glendinning@smsc.com>
13	Description
14	-----------
16	The Standard Microsystems Corporation (SMSC) EMC2103 chips
17	contain up to 4 temperature sensors and a single fan controller.
19	Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
20	triggered if the rotation speed has dropped below a programmable limit. Fan
21	readings can be divided by a programmable divider (1, 2, 4 or 8) to give
22	the readings more range or accuracy. Not all RPM values can accurately be
23	represented, so some rounding is done. With a divider of 1, the lowest
24	representable value is 480 RPM.
26	This driver supports RPM based control, to use this a fan target
27	should be written to fan1_target and pwm1_enable should be set to 3.
29	The 2103-2 and 2103-4 variants have a third temperature sensor, which can
30	be connected to two anti-parallel diodes.  These values can be read
31	as temp3 and temp4.  If only one diode is attached to this channel, temp4
32	will show as "fault".  The module parameter "apd=0" can be used to suppress
33	this 4th channel when anti-parallel diodes are not fitted.
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.