Documentation/ABI/testing/sysfs-class-hwmon

   1 What:           /sys/class/hwmon/hwmonX/name
   2 Description:
   3                 The chip name.
   4                 This should be a short, lowercase string, not containing
   5                 whitespace, dashes, or the wildcard character '*'.
   6                 This attribute represents the chip name. It is the only
   7                 mandatory attribute.
   8                 I2C devices get this attribute created automatically.
   9
  10                 RO
  11
  12 What:           /sys/class/hwmon/hwmonX/label
  13 Description:
  14                 A descriptive label that allows to uniquely identify a
  15                 device within the system.
  16                 The contents of the label are free-form.
  17
  18                 RO
  19
  20 What:           /sys/class/hwmon/hwmonX/update_interval
  21 Description:
  22                 The interval at which the chip will update readings.
  23                 Unit: millisecond
  24
  25                 RW
  26
  27                 Some devices have a variable update rate or interval.
  28                 This attribute can be used to change it to the desired value.
  29
  30 What:           /sys/class/hwmon/hwmonX/inY_min
  31 Description:
  32                 Voltage min value.
  33
  34                 Unit: millivolt
  35
  36                 RW
  37
  38 What:           /sys/class/hwmon/hwmonX/inY_lcrit
  39 Description:
  40                 Voltage critical min value.
  41
  42                 Unit: millivolt
  43
  44                 RW
  45
  46                 If voltage drops to or below this limit, the system may
  47                 take drastic action such as power down or reset. At the very
  48                 least, it should report a fault.
  49
  50 What:           /sys/class/hwmon/hwmonX/inY_max
  51 Description:
  52                 Voltage max value.
  53
  54                 Unit: millivolt
  55
  56                 RW
  57
  58 What:           /sys/class/hwmon/hwmonX/inY_crit
  59 Description:
  60                 Voltage critical max value.
  61
  62                 Unit: millivolt
  63
  64                 RW
  65
  66                 If voltage reaches or exceeds this limit, the system may
  67                 take drastic action such as power down or reset. At the very
  68                 least, it should report a fault.
  69
  70 What:           /sys/class/hwmon/hwmonX/inY_input
  71 Description:
  72                 Voltage input value.
  73
  74                 Unit: millivolt
  75
  76                 RO
  77
  78                 Voltage measured on the chip pin.
  79
  80                 Actual voltage depends on the scaling resistors on the
  81                 motherboard, as recommended in the chip datasheet.
  82
  83                 This varies by chip and by motherboard.
  84                 Because of this variation, values are generally NOT scaled
  85                 by the chip driver, and must be done by the application.
  86                 However, some drivers (notably lm87 and via686a)
  87                 do scale, because of internal resistors built into a chip.
  88                 These drivers will output the actual voltage. Rule of
  89                 thumb: drivers should report the voltage values at the
  90                 "pins" of the chip.
  91
  92 What:           /sys/class/hwmon/hwmonX/inY_average
  93 Description:
  94                 Average voltage
  95
  96                 Unit: millivolt
  97
  98                 RO
  99
 100 What:           /sys/class/hwmon/hwmonX/inY_lowest
 101 Description:
 102                 Historical minimum voltage
 103
 104                 Unit: millivolt
 105
 106                 RO
 107
 108 What:           /sys/class/hwmon/hwmonX/inY_highest
 109 Description:
 110                 Historical maximum voltage
 111
 112                 Unit: millivolt
 113
 114                 RO
 115
 116 What:           /sys/class/hwmon/hwmonX/inY_reset_history
 117 Description:
 118                 Reset inX_lowest and inX_highest
 119
 120                 WO
 121
 122 What:           /sys/class/hwmon/hwmonX/in_reset_history
 123 Description:
 124                 Reset inX_lowest and inX_highest for all sensors
 125
 126                 WO
 127
 128 What:           /sys/class/hwmon/hwmonX/inY_label
 129 Description:
 130                 Suggested voltage channel label.
 131
 132                 Text string
 133
 134                 Should only be created if the driver has hints about what
 135                 this voltage channel is being used for, and user-space
 136                 doesn't. In all other cases, the label is provided by
 137                 user-space.
 138
 139                 RO
 140
 141 What:           /sys/class/hwmon/hwmonX/inY_enable
 142 Description:
 143                 Enable or disable the sensors.
 144
 145                 When disabled the sensor read will return -ENODATA.
 146
 147                 - 1: Enable
 148                 - 0: Disable
 149
 150                 RW
 151
 152 What:           /sys/class/hwmon/hwmonX/inY_fault
 153 Description:
 154                 Reports a voltage hard failure (eg: shorted component)
 155
 156                 - 1: Failed
 157                 - 0: Ok
 158
 159                 RO
 160
 161 What:           /sys/class/hwmon/hwmonX/cpuY_vid
 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 version number.
 174
 175                 RW (but changing it should no more be necessary)
 176
 177                 Originally the VRM standard version multiplied by 10, but now
 178                 an arbitrary number, as not all standards have a version
 179                 number.
 180
 181                 Affects the way the driver calculates the CPU core reference
 182                 voltage from the vid pins.
 183
 184 What:           /sys/class/hwmon/hwmonX/inY_rated_min
 185 Description:
 186                 Minimum rated voltage.
 187
 188                 Unit: millivolt
 189
 190                 RO
 191
 192 What:           /sys/class/hwmon/hwmonX/inY_rated_max
 193 Description:
 194                 Maximum rated voltage.
 195
 196                 Unit: millivolt
 197
 198                 RO
 199
 200 What:           /sys/class/hwmon/hwmonX/fanY_min
 201 Description:
 202                 Fan minimum value
 203
 204                 Unit: revolution/min (RPM)
 205
 206                 RW
 207
 208 What:           /sys/class/hwmon/hwmonX/fanY_max
 209 Description:
 210                 Fan maximum value
 211
 212                 Unit: revolution/min (RPM)
 213
 214                 Only rarely supported by the hardware.
 215                 RW
 216
 217 What:           /sys/class/hwmon/hwmonX/fanY_input
 218 Description:
 219                 Fan input value.
 220
 221                 Unit: revolution/min (RPM)
 222
 223                 RO
 224
 225 What:           /sys/class/hwmon/hwmonX/fanY_div
 226 Description:
 227                 Fan divisor.
 228
 229                 Integer value in powers of two (1, 2, 4, 8, 16, 32, 64, 128).
 230
 231                 RW
 232
 233                 Some chips only support values 1, 2, 4 and 8.
 234                 Note that this is actually an internal clock divisor, which
 235                 affects the measurable speed range, not the read value.
 236
 237 What:           /sys/class/hwmon/hwmonX/fanY_pulses
 238 Description:
 239                 Number of tachometer pulses per fan revolution.
 240
 241                 Integer value, typically between 1 and 4.
 242
 243                 RW
 244
 245                 This value is a characteristic of the fan connected to the
 246                 device's input, so it has to be set in accordance with the fan
 247                 model.
 248
 249                 Should only be created if the chip has a register to configure
 250                 the number of pulses. In the absence of such a register (and
 251                 thus attribute) the value assumed by all devices is 2 pulses
 252                 per fan revolution.
 253
 254 What:           /sys/class/hwmon/hwmonX/fanY_target
 255 Description:
 256                 Desired fan speed
 257
 258                 Unit: revolution/min (RPM)
 259
 260                 RW
 261
 262                 Only makes sense if the chip supports closed-loop fan speed
 263                 control based on the measured fan speed.
 264
 265 What:           /sys/class/hwmon/hwmonX/fanY_label
 266 Description:
 267                 Suggested fan channel label.
 268
 269                 Text string
 270
 271                 Should only be created if the driver has hints about what
 272                 this fan channel is being used for, and user-space doesn't.
 273                 In all other cases, the label is provided by user-space.
 274
 275                 RO
 276
 277 What:           /sys/class/hwmon/hwmonX/fanY_enable
 278 Description:
 279                 Enable or disable the sensors.
 280
 281                 When disabled the sensor read will return -ENODATA.
 282
 283                 - 1: Enable
 284                 - 0: Disable
 285
 286                 RW
 287
 288 What:           /sys/class/hwmon/hwmonX/fanY_fault
 289 Description:
 290                 Reports if a fan has reported failure.
 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 control.
 300
 301                 Integer value in the range 0 to 255
 302
 303                 RW
 304
 305                 255 is max or 100%.
 306
 307 What:           /sys/class/hwmon/hwmonX/pwmY_enable
 308 Description:
 309                 Fan speed control method:
 310
 311                 - 0: no fan speed control (i.e. fan at full speed)
 312                 - 1: manual fan speed control enabled (using `pwmY`)
 313                 - 2+: automatic fan speed control enabled
 314
 315                 Check individual chip documentation files for automatic mode
 316                 details.
 317
 318                 RW
 319
 320 What:           /sys/class/hwmon/hwmonX/pwmY_mode
 321 Description:
 322                 - 0: DC mode (direct current)
 323                 - 1: PWM mode (pulse-width modulation)
 324
 325                 RW
 326
 327 What:           /sys/class/hwmon/hwmonX/pwmY_freq
 328 Description:
 329                 Base PWM frequency in Hz.
 330
 331                 Only possibly available when pwmN_mode is PWM, but not always
 332                 present even then.
 333
 334                 RW
 335
 336 What:           /sys/class/hwmon/hwmonX/pwmY_auto_channels_temp
 337 Description:
 338                 Select which temperature channels affect this PWM output in
 339                 auto mode.
 340
 341                 Bitfield, 1 is temp1, 2 is temp2, 4 is temp3 etc...
 342                 Which values are possible depend on the chip used.
 343
 344                 RW
 345
 346 What:           /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_pwm
 347 What:           /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_temp
 348 What:           /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_temp_hyst
 349 Description:
 350                 Define the PWM vs temperature curve.
 351
 352                 Number of trip points is chip-dependent. Use this for chips
 353                 which associate trip points to PWM output channels.
 354
 355                 RW
 356
 357 What:           /sys/class/hwmon/hwmonX/tempY_auto_pointZ_pwm
 358 What:           /sys/class/hwmon/hwmonX/tempY_auto_pointZ_temp
 359 What:           /sys/class/hwmon/hwmonX/tempY_auto_pointZ_temp_hyst
 360 Description:
 361                 Define the PWM vs temperature curve.
 362
 363                 Number of trip points is chip-dependent. Use this for chips
 364                 which associate trip points to temperature channels.
 365
 366                 RW
 367
 368 What:           /sys/class/hwmon/hwmonX/tempY_type
 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 all chips
 384
 385 What:           /sys/class/hwmon/hwmonX/tempY_max
 386 Description:
 387                 Temperature max value.
 388
 389                 Unit: millidegree Celsius (or millivolt, see below)
 390
 391                 RW
 392
 393 What:           /sys/class/hwmon/hwmonX/tempY_max_alarm
 394 Description:
 395                 Maximum temperature alarm flag.
 396
 397                 - 0: OK
 398                 - 1: temperature has reached tempY_max
 399
 400                 RO
 401
 402 What:           /sys/class/hwmon/hwmonX/tempY_min
 403 Description:
 404                 Temperature min value.
 405
 406                 Unit: millidegree Celsius
 407
 408                 RW
 409
 410 What:           /sys/class/hwmon/hwmonX/tempY_min_alarm
 411 Description:
 412                 Minimum temperature alarm flag.
 413
 414                 - 0: OK
 415                 - 1: temperature has reached tempY_min
 416
 417                 RO
 418
 419 What:           /sys/class/hwmon/hwmonX/tempY_max_hyst
 420 Description:
 421                 Temperature hysteresis value for max limit.
 422
 423                 Unit: millidegree Celsius
 424
 425                 Must be reported as an absolute temperature, NOT a delta
 426                 from the max value.
 427
 428                 RW
 429
 430 What:           /sys/class/hwmon/hwmonX/tempY_min_hyst
 431 Description:
 432                 Temperature hysteresis value for min limit.
 433                 Unit: millidegree Celsius
 434
 435                 Must be reported as an absolute temperature, NOT a delta
 436                 from the min value.
 437
 438                 RW
 439
 440 What:           /sys/class/hwmon/hwmonX/tempY_input
 441 Description:
 442                 Temperature input value.
 443
 444                 Unit: millidegree Celsius
 445
 446                 RO
 447
 448 What:           /sys/class/hwmon/hwmonX/tempY_crit
 449 Description:
 450                 Temperature critical max value, typically greater than
 451                 corresponding temp_max values.
 452
 453                 Unit: millidegree Celsius
 454
 455                 RW
 456
 457 What:           /sys/class/hwmon/hwmonX/tempY_crit_alarm
 458 Description:
 459                 Critical high temperature alarm flag.
 460
 461                 - 0: OK
 462                 - 1: temperature has reached tempY_crit
 463
 464                 RO
 465
 466 What:           /sys/class/hwmon/hwmonX/tempY_crit_hyst
 467 Description:
 468                 Temperature hysteresis value for critical limit.
 469
 470                 Unit: millidegree Celsius
 471
 472                 Must be reported as an absolute temperature, NOT a delta
 473                 from the critical value.
 474
 475                 RW
 476
 477 What:           /sys/class/hwmon/hwmonX/tempY_emergency
 478 Description:
 479                 Temperature emergency max value, for chips supporting more than
 480                 two upper temperature limits. Must be equal or greater than
 481                 corresponding temp_crit values.
 482
 483                 Unit: millidegree Celsius
 484
 485                 RW
 486
 487 What:           /sys/class/hwmon/hwmonX/tempY_emergency_alarm
 488 Description:
 489                 Emergency high temperature alarm flag.
 490
 491                 - 0: OK
 492                 - 1: temperature has reached tempY_emergency
 493
 494                 RO
 495
 496 What:           /sys/class/hwmon/hwmonX/tempY_emergency_hyst
 497 Description:
 498                 Temperature hysteresis value for emergency limit.
 499
 500                 Unit: millidegree Celsius
 501
 502                 Must be reported as an absolute temperature, NOT a delta
 503                 from the emergency value.
 504
 505                 RW
 506
 507 What:           /sys/class/hwmon/hwmonX/tempY_lcrit
 508 Description:
 509                 Temperature critical min value, typically lower than
 510                 corresponding temp_min values.
 511
 512                 Unit: millidegree Celsius
 513
 514                 RW
 515
 516 What:           /sys/class/hwmon/hwmonX/tempY_lcrit_hyst
 517 Description:
 518                 Temperature hysteresis value for critical min limit.
 519
 520                 Unit: millidegree Celsius
 521
 522                 Must be reported as an absolute temperature, NOT a delta
 523                 from the critical min value.
 524
 525                 RW
 526
 527 What:           /sys/class/hwmon/hwmonX/tempY_offset
 528 Description:
 529                 Temperature offset which is added to the temperature reading
 530                 by the chip.
 531
 532                 Unit: millidegree Celsius
 533
 534                 Read/Write value.
 535
 536 What:           /sys/class/hwmon/hwmonX/tempY_label
 537 Description:
 538                 Suggested temperature channel label.
 539
 540                 Text string
 541
 542                 Should only be created if the driver has hints about what
 543                 this temperature channel is being used for, and user-space
 544                 doesn't. In all other cases, the label is provided by
 545                 user-space.
 546
 547                 RO
 548
 549 What:           /sys/class/hwmon/hwmonX/tempY_lowest
 550 Description:
 551                 Historical minimum temperature
 552
 553                 Unit: millidegree Celsius
 554
 555                 RO
 556
 557 What:           /sys/class/hwmon/hwmonX/tempY_highest
 558 Description:
 559                 Historical maximum temperature
 560
 561                 Unit: millidegree Celsius
 562
 563                 RO
 564
 565 What:           /sys/class/hwmon/hwmonX/tempY_reset_history
 566 Description:
 567                 Reset temp_lowest and temp_highest
 568
 569                 WO
 570
 571 What:           /sys/class/hwmon/hwmonX/temp_reset_history
 572 Description:
 573                 Reset temp_lowest and temp_highest for all sensors
 574
 575                 WO
 576
 577 What:           /sys/class/hwmon/hwmonX/tempY_enable
 578 Description:
 579                 Enable or disable the sensors.
 580
 581                 When disabled the sensor read will return -ENODATA.
 582
 583                 - 1: Enable
 584                 - 0: Disable
 585
 586                 RW
 587
 588 What:           /sys/class/hwmon/hwmonX/tempY_rated_min
 589 Description:
 590                 Minimum rated temperature.
 591
 592                 Unit: millidegree Celsius
 593
 594                 RO
 595
 596 What:           /sys/class/hwmon/hwmonX/tempY_rated_max
 597 Description:
 598                 Maximum rated temperature.
 599
 600                 Unit: millidegree Celsius
 601
 602                 RO
 603
 604 What:           /sys/class/hwmon/hwmonX/currY_max
 605 Description:
 606                 Current max value
 607
 608                 Unit: milliampere
 609
 610                 RW
 611
 612 What:           /sys/class/hwmon/hwmonX/currY_min
 613 Description:
 614                 Current min value.
 615
 616                 Unit: milliampere
 617
 618                 RW
 619
 620 What:           /sys/class/hwmon/hwmonX/currY_lcrit
 621 Description:
 622                 Current critical low value
 623
 624                 Unit: milliampere
 625
 626                 RW
 627
 628 What:           /sys/class/hwmon/hwmonX/currY_crit
 629 Description:
 630                 Current critical high value.
 631
 632                 Unit: milliampere
 633
 634                 RW
 635
 636 What:           /sys/class/hwmon/hwmonX/currY_input
 637 Description:
 638                 Current input value
 639
 640                 Unit: milliampere
 641
 642                 RO
 643
 644 What:           /sys/class/hwmon/hwmonX/currY_average
 645 Description:
 646                 Average current use
 647
 648                 Unit: milliampere
 649
 650                 RO
 651
 652 What:           /sys/class/hwmon/hwmonX/currY_lowest
 653 Description:
 654                 Historical minimum current
 655
 656                 Unit: milliampere
 657
 658                 RO
 659
 660 What:           /sys/class/hwmon/hwmonX/currY_highest
 661 Description:
 662                 Historical maximum current
 663                 Unit: milliampere
 664                 RO
 665
 666 What:           /sys/class/hwmon/hwmonX/currY_reset_history
 667 Description:
 668                 Reset currX_lowest and currX_highest
 669
 670                 WO
 671
 672 What:           /sys/class/hwmon/hwmonX/curr_reset_history
 673 Description:
 674                 Reset currX_lowest and currX_highest for all sensors
 675
 676                 WO
 677
 678 What:           /sys/class/hwmon/hwmonX/currY_enable
 679 Description:
 680                 Enable or disable the sensors.
 681
 682                 When disabled the sensor read will return -ENODATA.
 683
 684                 - 1: Enable
 685                 - 0: Disable
 686
 687                 RW
 688
 689 What:           /sys/class/hwmon/hwmonX/currY_rated_min
 690 Description:
 691                 Minimum rated current.
 692
 693                 Unit: milliampere
 694
 695                 RO
 696
 697 What:           /sys/class/hwmon/hwmonX/currY_rated_max
 698 Description:
 699                 Maximum rated current.
 700
 701                 Unit: milliampere
 702
 703                 RO
 704
 705 What:           /sys/class/hwmon/hwmonX/powerY_average
 706 Description:
 707                 Average power use
 708
 709                 Unit: microWatt
 710
 711                 RO
 712
 713 What:           /sys/class/hwmon/hwmonX/powerY_average_interval
 714 Description:
 715                 Power use averaging interval.  A poll
 716                 notification is sent to this file if the
 717                 hardware changes the averaging interval.
 718
 719                 Unit: milliseconds
 720
 721                 RW
 722
 723 What:           /sys/class/hwmon/hwmonX/powerY_average_interval_max
 724 Description:
 725                 Maximum power use averaging interval
 726
 727                 Unit: milliseconds
 728
 729                 RO
 730
 731 What:           /sys/class/hwmon/hwmonX/powerY_average_interval_min
 732 Description:
 733                 Minimum power use averaging interval
 734
 735                 Unit: milliseconds
 736
 737                 RO
 738
 739 What:           /sys/class/hwmon/hwmonX/powerY_average_highest
 740 Description:
 741                 Historical average maximum power use
 742
 743                 Unit: microWatt
 744
 745                 RO
 746
 747 What:           /sys/class/hwmon/hwmonX/powerY_average_lowest
 748 Description:
 749                 Historical average minimum power use
 750
 751                 Unit: microWatt
 752
 753                 RO
 754
 755 What:           /sys/class/hwmon/hwmonX/powerY_average_max
 756 Description:
 757                 A poll notification is sent to
 758                 `powerY_average` when power use
 759                 rises above this value.
 760
 761                 Unit: microWatt
 762
 763                 RW
 764
 765 What:           /sys/class/hwmon/hwmonX/powerY_average_min
 766 Description:
 767                 A poll notification is sent to
 768                 `powerY_average` when power use
 769                 sinks below this value.
 770
 771                 Unit: microWatt
 772
 773                 RW
 774
 775 What:           /sys/class/hwmon/hwmonX/powerY_input
 776 Description:
 777                 Instantaneous power use
 778
 779                 Unit: microWatt
 780
 781                 RO
 782
 783 What:           /sys/class/hwmon/hwmonX/powerY_input_highest
 784 Description:
 785                 Historical maximum power use
 786
 787                 Unit: microWatt
 788
 789                 RO
 790
 791 What:           /sys/class/hwmon/hwmonX/powerY_input_lowest
 792 Description:
 793                 Historical minimum power use
 794
 795                 Unit: microWatt
 796
 797                 RO
 798
 799 What:           /sys/class/hwmon/hwmonX/powerY_reset_history
 800 Description:
 801                 Reset input_highest, input_lowest,
 802                 average_highest and average_lowest.
 803
 804                 WO
 805
 806 What:           /sys/class/hwmon/hwmonX/powerY_accuracy
 807 Description:
 808                 Accuracy of the power meter.
 809
 810                 Unit: Percent
 811
 812                 RO
 813
 814 What:           /sys/class/hwmon/hwmonX/powerY_cap
 815 Description:
 816                 If power use rises above this limit, the
 817                 system should take action to reduce power use.
 818                 A poll notification is sent to this file if the
 819                 cap is changed by the hardware.  The `*_cap`
 820                 files only appear if the cap is known to be
 821                 enforced by hardware.
 822
 823                 Unit: microWatt
 824
 825                 RW
 826
 827 What:           /sys/class/hwmon/hwmonX/powerY_cap_hyst
 828 Description:
 829                 Margin of hysteresis built around capping and
 830                 notification.
 831
 832                 Unit: microWatt
 833
 834                 RW
 835
 836 What:           /sys/class/hwmon/hwmonX/powerY_cap_max
 837 Description:
 838                 Maximum cap that can be set.
 839
 840                 Unit: microWatt
 841
 842                 RO
 843
 844 What:           /sys/class/hwmon/hwmonX/powerY_cap_min
 845 Description:
 846                 Minimum cap that can be set.
 847
 848                 Unit: microWatt
 849
 850                 RO
 851
 852 What:           /sys/class/hwmon/hwmonX/powerY_max
 853 Description:
 854                 Maximum power.
 855
 856                 Unit: microWatt
 857
 858                 RW
 859
 860 What:           /sys/class/hwmon/hwmonX/powerY_crit
 861 Description:
 862                 Critical maximum power.
 863
 864                 If power rises to or above this limit, the
 865                 system is expected take drastic action to reduce
 866                 power consumption, such as a system shutdown or
 867                 a forced powerdown of some devices.
 868
 869                 Unit: microWatt
 870
 871                 RW
 872
 873 What:           /sys/class/hwmon/hwmonX/powerY_enable
 874 Description:
 875                 Enable or disable the sensors.
 876
 877                 When disabled the sensor read will return
 878                 -ENODATA.
 879
 880                 - 1: Enable
 881                 - 0: Disable
 882
 883                 RW
 884
 885 What:           /sys/class/hwmon/hwmonX/powerY_rated_min
 886 Description:
 887                 Minimum rated power.
 888
 889                 Unit: microWatt
 890
 891                 RO
 892
 893 What:           /sys/class/hwmon/hwmonX/powerY_rated_max
 894 Description:
 895                 Maximum rated power.
 896
 897                 Unit: microWatt
 898
 899                 RO
 900
 901 What:           /sys/class/hwmon/hwmonX/energyY_input
 902 Description:
 903                 Cumulative energy use
 904
 905                 Unit: microJoule
 906
 907                 RO
 908
 909 What:           /sys/class/hwmon/hwmonX/energyY_enable
 910 Description:
 911                 Enable or disable the sensors.
 912
 913                 When disabled the sensor read will return
 914                 -ENODATA.
 915
 916                 - 1: Enable
 917                 - 0: Disable
 918
 919                 RW
 920
 921 What:           /sys/class/hwmon/hwmonX/humidityY_alarm
 922 Description:
 923                 Humidity limit detection
 924
 925                 - 0: OK
 926                 - 1: Humidity limit has been reached
 927
 928                 RO
 929
 930 What:           /sys/class/hwmon/hwmonX/humidityY_enable
 931 Description:
 932                 Enable or disable the sensors
 933
 934                 When disabled the sensor read will return
 935                 -ENODATA.
 936
 937                 - 1: Enable
 938                 - 0: Disable
 939
 940                 RW
 941
 942 What:           /sys/class/hwmon/hwmonX/humidityY_fault
 943 Description:
 944                 Reports a humidity sensor failure.
 945
 946                 - 1: Failed
 947                 - 0: Ok
 948
 949                 RO
 950
 951 What:           /sys/class/hwmon/hwmonX/humidityY_input
 952 Description:
 953                 Humidity
 954
 955                 Unit: milli-percent (per cent mille, pcm)
 956
 957                 RO
 958
 959 What:           /sys/class/hwmon/hwmonX/humidityY_label
 960 Description:
 961                 Suggested humidity channel label.
 962
 963                 Text string
 964
 965                 Should only be created if the driver has hints about what
 966                 this humidity channel is being used for, and user-space
 967                 doesn't. In all other cases, the label is provided by
 968                 user-space.
 969
 970                 RO
 971
 972 What:           /sys/class/hwmon/hwmonX/humidityY_max
 973 Description:
 974                 Humidity max value.
 975
 976                 Unit: milli-percent (per cent mille, pcm)
 977
 978                 RW
 979
 980 What:           /sys/class/hwmon/hwmonX/humidityY_max_alarm
 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/humidityY_max_hyst
 990 Description:
 991                 Humidity hysteresis value for max limit.
 992
 993                 Unit: milli-percent (per cent mille, pcm)
 994
 995                 Must be reported as an absolute humidity, NOT a delta
 996                 from the max value.
 997
 998                 RW
 999
1000 What:           /sys/class/hwmon/hwmonX/humidityY_min
1001 Description:
1002                 Humidity min value.
1003
1004                 Unit: milli-percent (per cent mille, pcm)
1005
1006                 RW
1007
1008 What:           /sys/class/hwmon/hwmonX/humidityY_min_alarm
1009 Description:
1010                 Minimum humidity detection
1011
1012                 - 0: OK
1013                 - 1: Minimum humidity detected
1014
1015                 RO
1016
1017 What:           /sys/class/hwmon/hwmonX/humidityY_min_hyst
1018 Description:
1019                 Humidity hysteresis value for min limit.
1020
1021                 Unit: milli-percent (per cent mille, pcm)
1022
1023                 Must be reported as an absolute humidity, NOT a delta
1024                 from the min value.
1025
1026                 RW
1027
1028 What:           /sys/class/hwmon/hwmonX/humidityY_rated_min
1029 Description:
1030                 Minimum rated humidity.
1031
1032                 Unit: milli-percent (per cent mille, pcm)
1033
1034                 RO
1035
1036 What:           /sys/class/hwmon/hwmonX/humidityY_rated_max
1037 Description:
1038                 Maximum rated humidity.
1039
1040                 Unit: milli-percent (per cent mille, pcm)
1041
1042                 RO
1043
1044
1045 What:           /sys/class/hwmon/hwmonX/intrusionY_alarm
1046 Description:
1047                 Chassis intrusion detection
1048
1049                 - 0: OK
1050                 - 1: intrusion detected
1051
1052                 RW
1053
1054                 Contrary to regular alarm flags which clear themselves
1055                 automatically when read, this one sticks until cleared by
1056                 the user. This is done by writing 0 to the file. Writing
1057                 other values is unsupported.
1058
1059 What:           /sys/class/hwmon/hwmonX/intrusionY_beep
1060 Description:
1061                 Chassis intrusion beep
1062
1063                 - 0: disable
1064                 - 1: enable
1065
1066                 RW
1067
1068 What:           /sys/class/hwmon/hwmonX/device/pec
1069 Description:
1070                 PEC support on I2C devices
1071
1072                 - 0, off, n: disable
1073                 - 1, on, y: enable
1074
1075                 RW