1 What: /sys/class/hwmon/hwmonX/name
2 Description:
3 The chip name.
4 This should be a short, lowerc
5 whitespace, dashes, or the wil
6 This attribute represents the
7 mandatory attribute.
8 I2C devices get this attribute
9
10 RO
11
12 What: /sys/class/hwmon/hwmonX/label
13 Description:
14 A descriptive label that allow
15 device within the system.
16 The contents of the label are
17
18 RO
19
20 What: /sys/class/hwmon/hwmonX/update
21 Description:
22 The interval at which the chip
23 Unit: millisecond
24
25 RW
26
27 Some devices have a variable u
28 This attribute can be used to
29
30 What: /sys/class/hwmon/hwmonX/inY_mi
31 Description:
32 Voltage min value.
33
34 Unit: millivolt
35
36 RW
37
38 What: /sys/class/hwmon/hwmonX/inY_lc
39 Description:
40 Voltage critical min value.
41
42 Unit: millivolt
43
44 RW
45
46 If voltage drops to or below t
47 take drastic action such as po
48 least, it should report a faul
49
50 What: /sys/class/hwmon/hwmonX/inY_ma
51 Description:
52 Voltage max value.
53
54 Unit: millivolt
55
56 RW
57
58 What: /sys/class/hwmon/hwmonX/inY_cr
59 Description:
60 Voltage critical max value.
61
62 Unit: millivolt
63
64 RW
65
66 If voltage reaches or exceeds
67 take drastic action such as po
68 least, it should report a faul
69
70 What: /sys/class/hwmon/hwmonX/inY_in
71 Description:
72 Voltage input value.
73
74 Unit: millivolt
75
76 RO
77
78 Voltage measured on the chip p
79
80 Actual voltage depends on the
81 motherboard, as recommended in
82
83 This varies by chip and by mot
84 Because of this variation, val
85 by the chip driver, and must b
86 However, some drivers (notably
87 do scale, because of internal
88 These drivers will output the
89 thumb: drivers should report t
90 "pins" of the chip.
91
92 What: /sys/class/hwmon/hwmonX/inY_av
93 Description:
94 Average voltage
95
96 Unit: millivolt
97
98 RO
99
100 What: /sys/class/hwmon/hwmonX/inY_lo
101 Description:
102 Historical minimum voltage
103
104 Unit: millivolt
105
106 RO
107
108 What: /sys/class/hwmon/hwmonX/inY_hi
109 Description:
110 Historical maximum voltage
111
112 Unit: millivolt
113
114 RO
115
116 What: /sys/class/hwmon/hwmonX/inY_re
117 Description:
118 Reset inX_lowest and inX_highe
119
120 WO
121
122 What: /sys/class/hwmon/hwmonX/in_res
123 Description:
124 Reset inX_lowest and inX_highe
125
126 WO
127
128 What: /sys/class/hwmon/hwmonX/inY_la
129 Description:
130 Suggested voltage channel labe
131
132 Text string
133
134 Should only be created if the
135 this voltage channel is being
136 doesn't. In all other cases, t
137 user-space.
138
139 RO
140
141 What: /sys/class/hwmon/hwmonX/inY_en
142 Description:
143 Enable or disable the sensors.
144
145 When disabled the sensor read
146
147 - 1: Enable
148 - 0: Disable
149
150 RW
151
152 What: /sys/class/hwmon/hwmonX/inY_fa
153 Description:
154 Reports a voltage hard failure
155
156 - 1: Failed
157 - 0: Ok
158
159 RO
160
161 What: /sys/class/hwmon/hwmonX/cpuY_v
162 Description:
163 CPU core reference voltage.
164
165 Unit: millivolt
166
167 RO
168
169 Not always correct.
170
171 What: /sys/class/hwmon/hwmonX/vrm
172 Description:
173 Voltage Regulator Module versi
174
175 RW (but changing it should no
176
177 Originally the VRM standard ve
178 an arbitrary number, as not al
179 number.
180
181 Affects the way the driver cal
182 voltage from the vid pins.
183
184 What: /sys/class/hwmon/hwmonX/inY_ra
185 Description:
186 Minimum rated voltage.
187
188 Unit: millivolt
189
190 RO
191
192 What: /sys/class/hwmon/hwmonX/inY_ra
193 Description:
194 Maximum rated voltage.
195
196 Unit: millivolt
197
198 RO
199
200 What: /sys/class/hwmon/hwmonX/fanY_m
201 Description:
202 Fan minimum value
203
204 Unit: revolution/min (RPM)
205
206 RW
207
208 What: /sys/class/hwmon/hwmonX/fanY_m
209 Description:
210 Fan maximum value
211
212 Unit: revolution/min (RPM)
213
214 Only rarely supported by the h
215 RW
216
217 What: /sys/class/hwmon/hwmonX/fanY_i
218 Description:
219 Fan input value.
220
221 Unit: revolution/min (RPM)
222
223 RO
224
225 What: /sys/class/hwmon/hwmonX/fanY_d
226 Description:
227 Fan divisor.
228
229 Integer value in powers of two
230
231 RW
232
233 Some chips only support values
234 Note that this is actually an
235 affects the measurable speed r
236
237 What: /sys/class/hwmon/hwmonX/fanY_p
238 Description:
239 Number of tachometer pulses pe
240
241 Integer value, typically betwe
242
243 RW
244
245 This value is a characteristic
246 device's input, so it has to b
247 model.
248
249 Should only be created if the
250 the number of pulses. In the a
251 thus attribute) the value assu
252 per fan revolution.
253
254 What: /sys/class/hwmon/hwmonX/fanY_t
255 Description:
256 Desired fan speed
257
258 Unit: revolution/min (RPM)
259
260 RW
261
262 Only makes sense if the chip s
263 control based on the measured
264
265 What: /sys/class/hwmon/hwmonX/fanY_l
266 Description:
267 Suggested fan channel label.
268
269 Text string
270
271 Should only be created if the
272 this fan channel is being used
273 In all other cases, the label
274
275 RO
276
277 What: /sys/class/hwmon/hwmonX/fanY_e
278 Description:
279 Enable or disable the sensors.
280
281 When disabled the sensor read
282
283 - 1: Enable
284 - 0: Disable
285
286 RW
287
288 What: /sys/class/hwmon/hwmonX/fanY_f
289 Description:
290 Reports if a fan has reported
291
292 - 1: Failed
293 - 0: Ok
294
295 RO
296
297 What: /sys/class/hwmon/hwmonX/pwmY
298 Description:
299 Pulse width modulation fan con
300
301 Integer value in the range 0 t
302
303 RW
304
305 255 is max or 100%.
306
307 What: /sys/class/hwmon/hwmonX/pwmY_e
308 Description:
309 Fan speed control method:
310
311 - 0: no fan speed control (i.e
312 - 1: manual fan speed control
313 - 2+: automatic fan speed cont
314
315 Check individual chip document
316 details.
317
318 RW
319
320 What: /sys/class/hwmon/hwmonX/pwmY_m
321 Description:
322 - 0: DC mode (direct current)
323 - 1: PWM mode (pulse-width mod
324
325 RW
326
327 What: /sys/class/hwmon/hwmonX/pwmY_f
328 Description:
329 Base PWM frequency in Hz.
330
331 Only possibly available when p
332 present even then.
333
334 RW
335
336 What: /sys/class/hwmon/hwmonX/pwmY_a
337 Description:
338 Select which temperature chann
339 auto mode.
340
341 Bitfield, 1 is temp1, 2 is tem
342 Which values are possible depe
343
344 RW
345
346 What: /sys/class/hwmon/hwmonX/pwmY_a
347 What: /sys/class/hwmon/hwmonX/pwmY_a
348 What: /sys/class/hwmon/hwmonX/pwmY_a
349 Description:
350 Define the PWM vs temperature
351
352 Number of trip points is chip-
353 which associate trip points to
354
355 RW
356
357 What: /sys/class/hwmon/hwmonX/tempY_
358 What: /sys/class/hwmon/hwmonX/tempY_
359 What: /sys/class/hwmon/hwmonX/tempY_
360 Description:
361 Define the PWM vs temperature
362
363 Number of trip points is chip-
364 which associate trip points to
365
366 RW
367
368 What: /sys/class/hwmon/hwmonX/tempY_
369 Description:
370 Sensor type selection.
371
372 Integers 1 to 6
373
374 RW
375
376 - 1: CPU embedded diode
377 - 2: 3904 transistor
378 - 3: thermal diode
379 - 4: thermistor
380 - 5: AMD AMDSI
381 - 6: Intel PECI
382
383 Not all types are supported by
384
385 What: /sys/class/hwmon/hwmonX/tempY_
386 Description:
387 Temperature max value.
388
389 Unit: millidegree Celsius (or
390
391 RW
392
393 What: /sys/class/hwmon/hwmonX/tempY_
394 Description:
395 Maximum temperature alarm flag
396
397 - 0: OK
398 - 1: temperature has reached t
399
400 RO
401
402 What: /sys/class/hwmon/hwmonX/tempY_
403 Description:
404 Temperature min value.
405
406 Unit: millidegree Celsius
407
408 RW
409
410 What: /sys/class/hwmon/hwmonX/tempY_
411 Description:
412 Minimum temperature alarm flag
413
414 - 0: OK
415 - 1: temperature has reached t
416
417 RO
418
419 What: /sys/class/hwmon/hwmonX/tempY_
420 Description:
421 Temperature hysteresis value f
422
423 Unit: millidegree Celsius
424
425 Must be reported as an absolut
426 from the max value.
427
428 RW
429
430 What: /sys/class/hwmon/hwmonX/tempY_
431 Description:
432 Temperature hysteresis value f
433 Unit: millidegree Celsius
434
435 Must be reported as an absolut
436 from the min value.
437
438 RW
439
440 What: /sys/class/hwmon/hwmonX/tempY_
441 Description:
442 Temperature input value.
443
444 Unit: millidegree Celsius
445
446 RO
447
448 What: /sys/class/hwmon/hwmonX/tempY_
449 Description:
450 Temperature critical max value
451 corresponding temp_max values.
452
453 Unit: millidegree Celsius
454
455 RW
456
457 What: /sys/class/hwmon/hwmonX/tempY_
458 Description:
459 Critical high temperature alar
460
461 - 0: OK
462 - 1: temperature has reached t
463
464 RO
465
466 What: /sys/class/hwmon/hwmonX/tempY_
467 Description:
468 Temperature hysteresis value f
469
470 Unit: millidegree Celsius
471
472 Must be reported as an absolut
473 from the critical value.
474
475 RW
476
477 What: /sys/class/hwmon/hwmonX/tempY_
478 Description:
479 Temperature emergency max valu
480 two upper temperature limits.
481 corresponding temp_crit values
482
483 Unit: millidegree Celsius
484
485 RW
486
487 What: /sys/class/hwmon/hwmonX/tempY_
488 Description:
489 Emergency high temperature ala
490
491 - 0: OK
492 - 1: temperature has reached t
493
494 RO
495
496 What: /sys/class/hwmon/hwmonX/tempY_
497 Description:
498 Temperature hysteresis value f
499
500 Unit: millidegree Celsius
501
502 Must be reported as an absolut
503 from the emergency value.
504
505 RW
506
507 What: /sys/class/hwmon/hwmonX/tempY_
508 Description:
509 Temperature critical min value
510 corresponding temp_min values.
511
512 Unit: millidegree Celsius
513
514 RW
515
516 What: /sys/class/hwmon/hwmonX/tempY_
517 Description:
518 Temperature hysteresis value f
519
520 Unit: millidegree Celsius
521
522 Must be reported as an absolut
523 from the critical min value.
524
525 RW
526
527 What: /sys/class/hwmon/hwmonX/tempY_
528 Description:
529 Temperature offset which is ad
530 by the chip.
531
532 Unit: millidegree Celsius
533
534 Read/Write value.
535
536 What: /sys/class/hwmon/hwmonX/tempY_
537 Description:
538 Suggested temperature channel
539
540 Text string
541
542 Should only be created if the
543 this temperature channel is be
544 doesn't. In all other cases, t
545 user-space.
546
547 RO
548
549 What: /sys/class/hwmon/hwmonX/tempY_
550 Description:
551 Historical minimum temperature
552
553 Unit: millidegree Celsius
554
555 RO
556
557 What: /sys/class/hwmon/hwmonX/tempY_
558 Description:
559 Historical maximum temperature
560
561 Unit: millidegree Celsius
562
563 RO
564
565 What: /sys/class/hwmon/hwmonX/tempY_
566 Description:
567 Reset temp_lowest and temp_hig
568
569 WO
570
571 What: /sys/class/hwmon/hwmonX/temp_r
572 Description:
573 Reset temp_lowest and temp_hig
574
575 WO
576
577 What: /sys/class/hwmon/hwmonX/tempY_
578 Description:
579 Enable or disable the sensors.
580
581 When disabled the sensor read
582
583 - 1: Enable
584 - 0: Disable
585
586 RW
587
588 What: /sys/class/hwmon/hwmonX/tempY_
589 Description:
590 Minimum rated temperature.
591
592 Unit: millidegree Celsius
593
594 RO
595
596 What: /sys/class/hwmon/hwmonX/tempY_
597 Description:
598 Maximum rated temperature.
599
600 Unit: millidegree Celsius
601
602 RO
603
604 What: /sys/class/hwmon/hwmonX/currY_
605 Description:
606 Current max value
607
608 Unit: milliampere
609
610 RW
611
612 What: /sys/class/hwmon/hwmonX/currY_
613 Description:
614 Current min value.
615
616 Unit: milliampere
617
618 RW
619
620 What: /sys/class/hwmon/hwmonX/currY_
621 Description:
622 Current critical low value
623
624 Unit: milliampere
625
626 RW
627
628 What: /sys/class/hwmon/hwmonX/currY_
629 Description:
630 Current critical high value.
631
632 Unit: milliampere
633
634 RW
635
636 What: /sys/class/hwmon/hwmonX/currY_
637 Description:
638 Current input value
639
640 Unit: milliampere
641
642 RO
643
644 What: /sys/class/hwmon/hwmonX/currY_
645 Description:
646 Average current use
647
648 Unit: milliampere
649
650 RO
651
652 What: /sys/class/hwmon/hwmonX/currY_
653 Description:
654 Historical minimum current
655
656 Unit: milliampere
657
658 RO
659
660 What: /sys/class/hwmon/hwmonX/currY_
661 Description:
662 Historical maximum current
663 Unit: milliampere
664 RO
665
666 What: /sys/class/hwmon/hwmonX/currY_
667 Description:
668 Reset currX_lowest and currX_h
669
670 WO
671
672 What: /sys/class/hwmon/hwmonX/curr_r
673 Description:
674 Reset currX_lowest and currX_h
675
676 WO
677
678 What: /sys/class/hwmon/hwmonX/currY_
679 Description:
680 Enable or disable the sensors.
681
682 When disabled the sensor read
683
684 - 1: Enable
685 - 0: Disable
686
687 RW
688
689 What: /sys/class/hwmon/hwmonX/currY_
690 Description:
691 Minimum rated current.
692
693 Unit: milliampere
694
695 RO
696
697 What: /sys/class/hwmon/hwmonX/currY_
698 Description:
699 Maximum rated current.
700
701 Unit: milliampere
702
703 RO
704
705 What: /sys/class/hwmon/hwmonX/powerY
706 Description:
707 Average power use
708
709 Unit: microWatt
710
711 RO
712
713 What: /sys/class/hwmon/hwmonX/powerY
714 Description:
715 Power use averaging interval.
716 notification is sent to this f
717 hardware changes the averaging
718
719 Unit: milliseconds
720
721 RW
722
723 What: /sys/class/hwmon/hwmonX/powerY
724 Description:
725 Maximum power use averaging in
726
727 Unit: milliseconds
728
729 RO
730
731 What: /sys/class/hwmon/hwmonX/powerY
732 Description:
733 Minimum power use averaging in
734
735 Unit: milliseconds
736
737 RO
738
739 What: /sys/class/hwmon/hwmonX/powerY
740 Description:
741 Historical average maximum pow
742
743 Unit: microWatt
744
745 RO
746
747 What: /sys/class/hwmon/hwmonX/powerY
748 Description:
749 Historical average minimum pow
750
751 Unit: microWatt
752
753 RO
754
755 What: /sys/class/hwmon/hwmonX/powerY
756 Description:
757 A poll notification is sent to
758 `powerY_average` when power us
759 rises above this value.
760
761 Unit: microWatt
762
763 RW
764
765 What: /sys/class/hwmon/hwmonX/powerY
766 Description:
767 A poll notification is sent to
768 `powerY_average` when power us
769 sinks below this value.
770
771 Unit: microWatt
772
773 RW
774
775 What: /sys/class/hwmon/hwmonX/powerY
776 Description:
777 Instantaneous power use
778
779 Unit: microWatt
780
781 RO
782
783 What: /sys/class/hwmon/hwmonX/powerY
784 Description:
785 Historical maximum power use
786
787 Unit: microWatt
788
789 RO
790
791 What: /sys/class/hwmon/hwmonX/powerY
792 Description:
793 Historical minimum power use
794
795 Unit: microWatt
796
797 RO
798
799 What: /sys/class/hwmon/hwmonX/powerY
800 Description:
801 Reset input_highest, input_low
802 average_highest and average_lo
803
804 WO
805
806 What: /sys/class/hwmon/hwmonX/powerY
807 Description:
808 Accuracy of the power meter.
809
810 Unit: Percent
811
812 RO
813
814 What: /sys/class/hwmon/hwmonX/powerY
815 Description:
816 If power use rises above this
817 system should take action to r
818 A poll notification is sent to
819 cap is changed by the hardware
820 files only appear if the cap i
821 enforced by hardware.
822
823 Unit: microWatt
824
825 RW
826
827 What: /sys/class/hwmon/hwmonX/powerY
828 Description:
829 Margin of hysteresis built aro
830 notification.
831
832 Unit: microWatt
833
834 RW
835
836 What: /sys/class/hwmon/hwmonX/powerY
837 Description:
838 Maximum cap that can be set.
839
840 Unit: microWatt
841
842 RO
843
844 What: /sys/class/hwmon/hwmonX/powerY
845 Description:
846 Minimum cap that can be set.
847
848 Unit: microWatt
849
850 RO
851
852 What: /sys/class/hwmon/hwmonX/powerY
853 Description:
854 Maximum power.
855
856 Unit: microWatt
857
858 RW
859
860 What: /sys/class/hwmon/hwmonX/powerY
861 Description:
862 Critical maximum power.
863
864 If power rises to or above thi
865 system is expected take drasti
866 power consumption, such as a s
867 a forced powerdown of some dev
868
869 Unit: microWatt
870
871 RW
872
873 What: /sys/class/hwmon/hwmonX/powerY
874 Description:
875 Enable or disable the sensors.
876
877 When disabled the sensor read
878 -ENODATA.
879
880 - 1: Enable
881 - 0: Disable
882
883 RW
884
885 What: /sys/class/hwmon/hwmonX/powerY
886 Description:
887 Minimum rated power.
888
889 Unit: microWatt
890
891 RO
892
893 What: /sys/class/hwmon/hwmonX/powerY
894 Description:
895 Maximum rated power.
896
897 Unit: microWatt
898
899 RO
900
901 What: /sys/class/hwmon/hwmonX/energy
902 Description:
903 Cumulative energy use
904
905 Unit: microJoule
906
907 RO
908
909 What: /sys/class/hwmon/hwmonX/energy
910 Description:
911 Enable or disable the sensors.
912
913 When disabled the sensor read
914 -ENODATA.
915
916 - 1: Enable
917 - 0: Disable
918
919 RW
920
921 What: /sys/class/hwmon/hwmonX/humidi
922 Description:
923 Humidity limit detection
924
925 - 0: OK
926 - 1: Humidity limit has been r
927
928 RO
929
930 What: /sys/class/hwmon/hwmonX/humidi
931 Description:
932 Enable or disable the sensors
933
934 When disabled the sensor read
935 -ENODATA.
936
937 - 1: Enable
938 - 0: Disable
939
940 RW
941
942 What: /sys/class/hwmon/hwmonX/humidi
943 Description:
944 Reports a humidity sensor fail
945
946 - 1: Failed
947 - 0: Ok
948
949 RO
950
951 What: /sys/class/hwmon/hwmonX/humidi
952 Description:
953 Humidity
954
955 Unit: milli-percent (per cent
956
957 RO
958
959 What: /sys/class/hwmon/hwmonX/humidi
960 Description:
961 Suggested humidity channel lab
962
963 Text string
964
965 Should only be created if the
966 this humidity channel is being
967 doesn't. In all other cases, t
968 user-space.
969
970 RO
971
972 What: /sys/class/hwmon/hwmonX/humidi
973 Description:
974 Humidity max value.
975
976 Unit: milli-percent (per cent
977
978 RW
979
980 What: /sys/class/hwmon/hwmonX/humidi
981 Description:
982 Maximum humidity detection
983
984 - 0: OK
985 - 1: Maximum humidity detected
986
987 RO
988
989 What: /sys/class/hwmon/hwmonX/humidi
990 Description:
991 Humidity hysteresis value for
992
993 Unit: milli-percent (per cent
994
995 Must be reported as an absolut
996 from the max value.
997
998 RW
999
1000 What: /sys/class/hwmon/hwmonX/humid
1001 Description:
1002 Humidity min value.
1003
1004 Unit: milli-percent (per cent
1005
1006 RW
1007
1008 What: /sys/class/hwmon/hwmonX/humid
1009 Description:
1010 Minimum humidity detection
1011
1012 - 0: OK
1013 - 1: Minimum humidity detecte
1014
1015 RO
1016
1017 What: /sys/class/hwmon/hwmonX/humid
1018 Description:
1019 Humidity hysteresis value for
1020
1021 Unit: milli-percent (per cent
1022
1023 Must be reported as an absolu
1024 from the min value.
1025
1026 RW
1027
1028 What: /sys/class/hwmon/hwmonX/humid
1029 Description:
1030 Minimum rated humidity.
1031
1032 Unit: milli-percent (per cent
1033
1034 RO
1035
1036 What: /sys/class/hwmon/hwmonX/humid
1037 Description:
1038 Maximum rated humidity.
1039
1040 Unit: milli-percent (per cent
1041
1042 RO
1043
1044
1045 What: /sys/class/hwmon/hwmonX/intru
1046 Description:
1047 Chassis intrusion detection
1048
1049 - 0: OK
1050 - 1: intrusion detected
1051
1052 RW
1053
1054 Contrary to regular alarm fla
1055 automatically when read, this
1056 the user. This is done by wri
1057 other values is unsupported.
1058
1059 What: /sys/class/hwmon/hwmonX/intru
1060 Description:
1061 Chassis intrusion beep
1062
1063 - 0: disable
1064 - 1: enable
1065
1066 RW
1067
1068 What: /sys/class/hwmon/hwmonX/devic
1069 Description:
1070 PEC support on I2C devices
1071
1072 - 0, off, n: disable
1073 - 1, on, y: enable
1074
1075 RW
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.