linux.git/Documentation/admin-guide/pm, branch v6.12.80

cpufreq: docs: Reflect latency changes in docs

2024-10-21T11:20:03+00:00

There were two changes related to transition latency recently.
Namely commit e13aa799c2a6 ("cpufreq: Change default transition delay
to 2ms") and
commit 37c6dccd6837 ("cpufreq: Remove LATENCY_MULTIPLIER").

Both changed the defaults / maximums so let the documentation
reflect that.

Signed-off-by: Christian Loehle 
Link: https://patch.msgid.link/46853b6e-bad5-4ace-9b23-ff157f234ae3@arm.com
Signed-off-by: Rafael J. Wysocki

Merge tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2024-09-19T07:16:04+00:00

Pull x86 platform drivers updates from Hans de Goede:

 - asus-wmi: Add support for vivobook fan profiles

 - dell-laptop: Add knobs to change battery charge settings

 - lg-laptop: Add operation region support

 - intel-uncore-freq: Add support for efficiency latency control

 - intel/ifs: Add SBAF test support

 - intel/pmc: Ignore all LTRs during suspend

 - platform/surface: Support for arm64 based Surface devices

 - wmi: Pass event data directly to legacy notify handlers

 - x86/platform/geode: switch GPIO buttons and LEDs to software
   properties

 - bunch of small cleanups, fixes, hw-id additions, etc.

* tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (65 commits)
  MAINTAINERS: adjust file entry in INTEL MID PLATFORM
  platform/x86: x86-android-tablets: Adjust Xiaomi Pad 2 bottom bezel touch buttons LED
  platform/mellanox: mlxbf-pmc: fix lockdep warning
  platform/x86/amd: pmf: Add quirk for TUF Gaming A14
  platform/x86: touchscreen_dmi: add nanote-next quirk
  platform/x86: asus-wmi: don't fail if platform_profile already registered
  platform/x86: asus-wmi: add debug print in more key places
  platform/x86: intel_scu_wdt: Move intel_scu_wdt.h to x86 subfolder
  platform/x86: intel_scu_ipc: Move intel_scu_ipc.h out of arch/x86/include/asm
  MAINTAINERS: Add Intel MID section
  platform/x86: panasonic-laptop: Add support for programmable buttons
  platform/olpc: Remove redundant null pointer checks in olpc_ec_setup_debugfs()
  platform/x86: intel/pmc: Ignore all LTRs during suspend
  platform/x86: wmi: Call both legacy and WMI driver notify handlers
  platform/x86: wmi: Merge get_event_data() with wmi_get_notify_data()
  platform/x86: wmi: Remove wmi_get_event_data()
  platform/x86: wmi: Pass event data directly to legacy notify handlers
  platform/x86: thinkpad_acpi: Fix uninitialized symbol 's' warning
  platform/x86: x86-android-tablets: Fix spelling in the comments
  platform/x86: ideapad-laptop: Make the scope_guard() clear of its scope
  ...

amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking`

2024-09-11T15:23:23+00:00

`amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU
core based on platform conditions.  Explicitly include it in the
documentation.

Reviewed-by: Gautham R. Shenoy 
Signed-off-by: Mario Limonciello

cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore`

2024-09-11T15:23:23+00:00

Explain that the sysfs file represents both preferred core being
enabled by the user and supported by the hardware.

Reviewed-by: Gautham R. Shenoy 
Signed-off-by: Mario Limonciello

cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator()

2024-09-11T15:23:23+00:00

The special case in amd_pstate_highest_perf_set() is the value used
for calculating the boost numerator.  Merge this into
amd_get_boost_ratio_numerator() and then use that to calculate boost
ratio.

This allows dropping more special casing of the highest perf value.

Reviewed-by: Gautham R. Shenoy 
Signed-off-by: Mario Limonciello

Documentation: admin-guide: pm: Add efficiency vs. latency tradeoff to uncore documentation

2024-09-04T18:17:31+00:00

Added documentation about the functionality of efficiency vs. latency tradeoff
control in intel Xeon processors, and how this is configured via sysfs.

Signed-off-by: Tero Kristo 
Reviewed-by: Ilpo Järvinen 
Link: https://lore.kernel.org/r/20240828153657.1296410-2-tero.kristo@linux.intel.com
Signed-off-by: Hans de Goede

cpufreq: docs: Add missing scaling_available_frequencies description

2024-07-02T18:51:08+00:00

Add a description of the scaling_available_frequencies attribute in
sysfs to the documentation.

Signed-off-by: Raphael Gallais-Pou 
Reviewed-by: Bagas Sanjaya 
Acked-by: Viresh Kumar 
Link: https://patch.msgid.link/20240701171040.369030-1-rgallaispou@gmail.com
Signed-off-by: Rafael J. Wysocki

Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method

2024-06-26T20:48:21+00:00

Updates the documentation in `amd-pstate.rst` to include information about
the per CPU boost control feature. Users can now enable or disable the
Core Performance Boost (CPB) feature on individual CPUs using the `boost`
sysfs attribute.

Reviewed-by: Gautham R. Shenoy 
Signed-off-by: Perry Yuan 
Co-developed-by: Mario Limonciello 
Link: https://lore.kernel.org/r/20240626042733.3747-5-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello

Documentation: PM: amd-pstate: add guided mode to the Operation mode

2024-06-21T02:52:05+00:00

the guided mode is also supported, so the operation mode should include
that mode as well.

Reviewed-by: Mario Limonciello 
Signed-off-by: Perry Yuan 
Reviewed-by: Gautham R. Shenoy 
Link: https://lore.kernel.org/r/a61d825ef71f6aacc8f1624fe9fb982b8446b5a7.1718811234.git.perry.yuan@amd.com
Signed-off-by: Mario Limonciello

Documentation: PM: amd-pstate: Fix section title underline

2024-02-12T13:40:32+00:00

Title under line too short

Signed-off-by: Meng Li 
[ rjw: Subject edits ]
Signed-off-by: Rafael J. Wysocki