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Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.

1	Kernel driver nct7904
2	====================
3	
4	Supported chip:
5	  * Nuvoton NCT7904D
6	    Prefix: nct7904
7	    Addresses: I2C 0x2d, 0x2e
8	    Datasheet: Publicly available at Nuvoton website
9		http://www.nuvoton.com/
10	
11	Author: Vadim V. Vlasov <vvlasov@dev.rtsoft.ru>
12	
13	
14	Description
15	-----------
16	
17	The NCT7904D is a hardware monitor supporting up to 20 voltage sensors,
18	internal temperature sensor, Intel PECI and AMD SB-TSI CPU temperature
19	interface, up to 12 fan tachometer inputs, up to 4 fan control channels
20	with SmartFan.
21	
22	
23	Sysfs entries
24	-------------
25	
26	Currently, the driver supports only the following features:
27	
28	in[1-20]_input		Input voltage measurements (mV)
29	
30	fan[1-12]_input		Fan tachometer measurements (rpm)
31	
32	temp1_input		Local temperature (1/1000 degree,
33				0.125 degree resolution)
34	
35	temp[2-9]_input		CPU temperatures (1/1000 degree,
36				0.125 degree resolution)
37	
38	pwm[1-4]_enable		R/W, 1/2 for manual or SmartFan mode
39				Setting SmartFan mode is supported only if it has been
40				previously configured by BIOS (or configuration EEPROM)
41	
42	pwm[1-4]		R/O in SmartFan mode, R/W in manual control mode
43	
44	The driver checks sensor control registers and does not export the sensors
45	that are not enabled. Anyway, a sensor that is enabled may actually be not
46	connected and thus provide zero readings.
47	
48	
49	Limitations
50	-----------
51	
52	The following features are not supported in current version:
53	
54	 - SmartFan control
55	 - Watchdog
56	 - GPIO
57	 - external temperature sensors
58	 - SMI
59	 - min/max values
60	 - many other...
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