xref: /openbmc/linux/Documentation/hwmon/adm1031.rst (revision 7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7)
1*7ebd8b66SMauro Carvalho ChehabKernel driver adm1031
2*7ebd8b66SMauro Carvalho Chehab=====================
3*7ebd8b66SMauro Carvalho Chehab
4*7ebd8b66SMauro Carvalho ChehabSupported chips:
5*7ebd8b66SMauro Carvalho Chehab  * Analog Devices ADM1030
6*7ebd8b66SMauro Carvalho Chehab
7*7ebd8b66SMauro Carvalho Chehab    Prefix: 'adm1030'
8*7ebd8b66SMauro Carvalho Chehab
9*7ebd8b66SMauro Carvalho Chehab    Addresses scanned: I2C 0x2c to 0x2e
10*7ebd8b66SMauro Carvalho Chehab
11*7ebd8b66SMauro Carvalho Chehab    Datasheet: Publicly available at the Analog Devices website
12*7ebd8b66SMauro Carvalho Chehab
13*7ebd8b66SMauro Carvalho Chehab	       http://www.analog.com/en/prod/0%2C2877%2CADM1030%2C00.html
14*7ebd8b66SMauro Carvalho Chehab
15*7ebd8b66SMauro Carvalho Chehab  * Analog Devices ADM1031
16*7ebd8b66SMauro Carvalho Chehab
17*7ebd8b66SMauro Carvalho Chehab    Prefix: 'adm1031'
18*7ebd8b66SMauro Carvalho Chehab
19*7ebd8b66SMauro Carvalho Chehab    Addresses scanned: I2C 0x2c to 0x2e
20*7ebd8b66SMauro Carvalho Chehab
21*7ebd8b66SMauro Carvalho Chehab    Datasheet: Publicly available at the Analog Devices website
22*7ebd8b66SMauro Carvalho Chehab
23*7ebd8b66SMauro Carvalho Chehab	       http://www.analog.com/en/prod/0%2C2877%2CADM1031%2C00.html
24*7ebd8b66SMauro Carvalho Chehab
25*7ebd8b66SMauro Carvalho ChehabAuthors:
26*7ebd8b66SMauro Carvalho Chehab	- Alexandre d'Alton <alex@alexdalton.org>
27*7ebd8b66SMauro Carvalho Chehab	- Jean Delvare <jdelvare@suse.de>
28*7ebd8b66SMauro Carvalho Chehab
29*7ebd8b66SMauro Carvalho ChehabDescription
30*7ebd8b66SMauro Carvalho Chehab-----------
31*7ebd8b66SMauro Carvalho Chehab
32*7ebd8b66SMauro Carvalho ChehabThe ADM1030 and ADM1031 are digital temperature sensors and fan controllers.
33*7ebd8b66SMauro Carvalho ChehabThey sense their own temperature as well as the temperature of up to one
34*7ebd8b66SMauro Carvalho Chehab(ADM1030) or two (ADM1031) external diodes.
35*7ebd8b66SMauro Carvalho Chehab
36*7ebd8b66SMauro Carvalho ChehabAll temperature values are given in degrees Celsius. Resolution is 0.5
37*7ebd8b66SMauro Carvalho Chehabdegree for the local temperature, 0.125 degree for the remote temperatures.
38*7ebd8b66SMauro Carvalho Chehab
39*7ebd8b66SMauro Carvalho ChehabEach temperature channel has its own high and low limits, plus a critical
40*7ebd8b66SMauro Carvalho Chehablimit.
41*7ebd8b66SMauro Carvalho Chehab
42*7ebd8b66SMauro Carvalho ChehabThe ADM1030 monitors a single fan speed, while the ADM1031 monitors up to
43*7ebd8b66SMauro Carvalho Chehabtwo. Each fan channel has its own low speed limit.
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