Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon

   1 What:           /sys/devices/.../hwmon/hwmon<i>/in0_input
   2 Date:           February 2023
   3 KernelVersion:  6.2
   4 Contact:        intel-gfx@lists.freedesktop.org
   5 Description:    RO. Current Voltage in millivolt.
   6
   7                 Only supported for particular Intel i915 graphics platforms.
   8
   9 What:           /sys/devices/.../hwmon/hwmon<i>/power1_max
  10 Date:           February 2023
  11 KernelVersion:  6.2
  12 Contact:        intel-gfx@lists.freedesktop.org
  13 Description:    RW. Card reactive sustained  (PL1/Tau) power limit in microwatts.
  14
  15                 The power controller will throttle the operating frequency
  16                 if the power averaged over a window (typically seconds)
  17                 exceeds this limit. A read value of 0 means that the PL1
  18                 power limit is disabled, writing 0 disables the
  19                 limit. Writing values > 0 will enable the power limit.
  20
  21                 Only supported for particular Intel i915 graphics platforms.
  22
  23 What:           /sys/devices/.../hwmon/hwmon<i>/power1_rated_max
  24 Date:           February 2023
  25 KernelVersion:  6.2
  26 Contact:        intel-gfx@lists.freedesktop.org
  27 Description:    RO. Card default power limit (default TDP setting).
  28
  29                 Only supported for particular Intel i915 graphics platforms.
  30
  31 What:           /sys/devices/.../hwmon/hwmon<i>/power1_max_interval
  32 Date:           February 2023
  33 KernelVersion:  6.2
  34 Contact:        intel-gfx@lists.freedesktop.org
  35 Description:    RW. Sustained power limit interval (Tau in PL1/Tau) in
  36                 milliseconds over which sustained power is averaged.
  37
  38                 Only supported for particular Intel i915 graphics platforms.
  39
  40 What:           /sys/devices/.../hwmon/hwmon<i>/power1_crit
  41 Date:           February 2023
  42 KernelVersion:  6.2
  43 Contact:        intel-gfx@lists.freedesktop.org
  44 Description:    RW. Card reactive critical (I1) power limit in microwatts.
  45
  46                 Card reactive critical (I1) power limit in microwatts is exposed
  47                 for client products. The power controller will throttle the
  48                 operating frequency if the power averaged over a window exceeds
  49                 this limit.
  50
  51                 Only supported for particular Intel i915 graphics platforms.
  52
  53 What:           /sys/devices/.../hwmon/hwmon<i>/curr1_crit
  54 Date:           February 2023
  55 KernelVersion:  6.2
  56 Contact:        intel-gfx@lists.freedesktop.org
  57 Description:    RW. Card reactive critical (I1) power limit in milliamperes.
  58
  59                 Card reactive critical (I1) power limit in milliamperes is
  60                 exposed for server products. The power controller will throttle
  61                 the operating frequency if the power averaged over a window
  62                 exceeds this limit.
  63
  64                 Only supported for particular Intel i915 graphics platforms.
  65
  66 What:           /sys/devices/.../hwmon/hwmon<i>/energy1_input
  67 Date:           February 2023
  68 KernelVersion:  6.2
  69 Contact:        intel-gfx@lists.freedesktop.org
  70 Description:    RO. Energy input of device or gt in microjoules.
  71
  72                 For i915 device level hwmon devices (name "i915") this
  73                 reflects energy input for the entire device. For gt level
  74                 hwmon devices (name "i915_gtN") this reflects energy input
  75                 for the gt.
  76
  77                 Only supported for particular Intel i915 graphics platforms.