xref: /linux/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon (revision 4ed22f1e52426635873416007d2c12e09615165f)
1f8572bb6SRiana TauroWhat:		/sys/devices/.../hwmon/hwmon<i>/in0_input
2f8572bb6SRiana TauroDate:		February 2023
3f8572bb6SRiana TauroKernelVersion:	6.2
4f8572bb6SRiana TauroContact:	intel-gfx@lists.freedesktop.org
5f8572bb6SRiana TauroDescription:	RO. Current Voltage in millivolt.
6f8572bb6SRiana Tauro
7f8572bb6SRiana Tauro		Only supported for particular Intel i915 graphics platforms.
899f55efbSDale B Stimson
999f55efbSDale B StimsonWhat:		/sys/devices/.../hwmon/hwmon<i>/power1_max
1099f55efbSDale B StimsonDate:		February 2023
1199f55efbSDale B StimsonKernelVersion:	6.2
1299f55efbSDale B StimsonContact:	intel-gfx@lists.freedesktop.org
1399f55efbSDale B StimsonDescription:	RW. Card reactive sustained  (PL1/Tau) power limit in microwatts.
1499f55efbSDale B Stimson
1599f55efbSDale B Stimson		The power controller will throttle the operating frequency
1699f55efbSDale B Stimson		if the power averaged over a window (typically seconds)
17*4ed22f1eSAshutosh Dixit		exceeds this limit. A read value of 0 means that the PL1
18*4ed22f1eSAshutosh Dixit		power limit is disabled, writing 0 disables the
19*4ed22f1eSAshutosh Dixit		limit. Writing values > 0 will enable the power limit.
2099f55efbSDale B Stimson
2199f55efbSDale B Stimson		Only supported for particular Intel i915 graphics platforms.
2299f55efbSDale B Stimson
2399f55efbSDale B StimsonWhat:		/sys/devices/.../hwmon/hwmon<i>/power1_rated_max
2499f55efbSDale B StimsonDate:		February 2023
2599f55efbSDale B StimsonKernelVersion:	6.2
2699f55efbSDale B StimsonContact:	intel-gfx@lists.freedesktop.org
2799f55efbSDale B StimsonDescription:	RO. Card default power limit (default TDP setting).
2899f55efbSDale B Stimson
2999f55efbSDale B Stimson		Only supported for particular Intel i915 graphics platforms.
30c41b8bdcSDale B Stimson
314c2572feSAshutosh DixitWhat:		/sys/devices/.../hwmon/hwmon<i>/power1_max_interval
324c2572feSAshutosh DixitDate:		February 2023
334c2572feSAshutosh DixitKernelVersion:	6.2
344c2572feSAshutosh DixitContact:	intel-gfx@lists.freedesktop.org
354c2572feSAshutosh DixitDescription:	RW. Sustained power limit interval (Tau in PL1/Tau) in
364c2572feSAshutosh Dixit		milliseconds over which sustained power is averaged.
374c2572feSAshutosh Dixit
384c2572feSAshutosh Dixit		Only supported for particular Intel i915 graphics platforms.
394c2572feSAshutosh Dixit
40c8939848SAshutosh DixitWhat:		/sys/devices/.../hwmon/hwmon<i>/power1_crit
41c8939848SAshutosh DixitDate:		February 2023
42c8939848SAshutosh DixitKernelVersion:	6.2
43c8939848SAshutosh DixitContact:	intel-gfx@lists.freedesktop.org
44c8939848SAshutosh DixitDescription:	RW. Card reactive critical (I1) power limit in microwatts.
45c8939848SAshutosh Dixit
46c8939848SAshutosh Dixit		Card reactive critical (I1) power limit in microwatts is exposed
47c8939848SAshutosh Dixit		for client products. The power controller will throttle the
48c8939848SAshutosh Dixit		operating frequency if the power averaged over a window exceeds
49c8939848SAshutosh Dixit		this limit.
50c8939848SAshutosh Dixit
51c8939848SAshutosh Dixit		Only supported for particular Intel i915 graphics platforms.
52c8939848SAshutosh Dixit
53c8939848SAshutosh DixitWhat:		/sys/devices/.../hwmon/hwmon<i>/curr1_crit
54c8939848SAshutosh DixitDate:		February 2023
55c8939848SAshutosh DixitKernelVersion:	6.2
56c8939848SAshutosh DixitContact:	intel-gfx@lists.freedesktop.org
57c8939848SAshutosh DixitDescription:	RW. Card reactive critical (I1) power limit in milliamperes.
58c8939848SAshutosh Dixit
59c8939848SAshutosh Dixit		Card reactive critical (I1) power limit in milliamperes is
60c8939848SAshutosh Dixit		exposed for server products. The power controller will throttle
61c8939848SAshutosh Dixit		the operating frequency if the power averaged over a window
62c8939848SAshutosh Dixit		exceeds this limit.
63c8939848SAshutosh Dixit
64c8939848SAshutosh Dixit		Only supported for particular Intel i915 graphics platforms.
65c8939848SAshutosh Dixit
66c41b8bdcSDale B StimsonWhat:		/sys/devices/.../hwmon/hwmon<i>/energy1_input
67c41b8bdcSDale B StimsonDate:		February 2023
68c41b8bdcSDale B StimsonKernelVersion:	6.2
69c41b8bdcSDale B StimsonContact:	intel-gfx@lists.freedesktop.org
70a6a924abSDale B StimsonDescription:	RO. Energy input of device or gt in microjoules.
71a6a924abSDale B Stimson
72a6a924abSDale B Stimson		For i915 device level hwmon devices (name "i915") this
73a6a924abSDale B Stimson		reflects energy input for the entire device. For gt level
74a6a924abSDale B Stimson		hwmon devices (name "i915_gtN") this reflects energy input
75a6a924abSDale B Stimson		for the gt.
76c41b8bdcSDale B Stimson
77c41b8bdcSDale B Stimson		Only supported for particular Intel i915 graphics platforms.
78