Merge tag 'platform-drivers-x86-v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
 "AMD PMC and PMF drivers:
   - Various bugfixes
   - Improved debugging support

  Intel PMC:
   - Refactor to support hw with multiple PMCs
   - Various other improvements / new hw support

  Intel Speed Select Technology (ISST):
   - TPMI Uncore Frequency + Cluster Level Power Controls
   - Various bugfixes
   - tools/intel-speed-select: Misc improvements

  Dell-DDV: Add documentation

  INT3472 ACPI camera sensor glue code:
   - Evaluate device's _DSM method to control imaging clock
   - Drop the need to have a table with per sensor-model info

  Lenovo Yogabook:
   - Refactor / rework to also support Android models

  Think-LMI:
   - Multiple improvements and fixes

  WMI:
   - Add proper API documentation for the WMI bus

  x86-android-tablets:
   - Misc new hw support

  Miscellaneous other cleanups / fixes"

* tag 'platform-drivers-x86-v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (91 commits)
  platform/x86:intel/pmc: Add Meteor Lake IOE-M PMC related maps
  platform/x86:intel/pmc: Add Meteor Lake IOE-P PMC related maps
  platform/x86:intel/pmc: Use SSRAM to discover pwrm base address of primary PMC
  platform/x86:intel/pmc: Discover PMC devices
  platform/x86:intel/pmc: Enable debugfs multiple PMC support
  platform/x86:intel/pmc: Add support to handle multiple PMCs
  platform/x86:intel/pmc: Combine core_init() and core_configure()
  platform/x86:intel/pmc: Update maps for Meteor Lake P/M platforms
  platform/x86/intel: tpmi: Remove hardcoded unit and offset
  platform/x86: int3472: discrete: Log a warning if the pin-numbers don't match
  platform/x86: int3472: discrete: Use FIELD_GET() on the GPIO _DSM return value
  platform/x86: int3472: discrete: Add alternative "AVDD" regulator supply name
  platform/x86: int3472: discrete: Add support for 1 GPIO regulator shared between 2 sensors
  platform/x86: int3472: discrete: Remove sensor_config-s
  platform/x86: int3472: discrete: Drop GPIO remapping support
  platform/x86: apple-gmux: don't use be32_to_cpu and cpu_to_be32
  platform/x86/dell/dell-rbtn: Fix resources leaking on error path
  platform/x86: ISST: Fix usage counter
  platform/x86: ISST: Reset default callback on unregister
  platform/x86: int3472: Switch back to use struct i2c_driver's .probe()
  ...
This commit is contained in:
Linus Torvalds
2023-06-30 14:50:00 -07:00
70 changed files with 4517 additions and 955 deletions

View File

@@ -5,7 +5,7 @@
Intel Uncore Frequency Scaling
==============================
:Copyright: |copy| 2022 Intel Corporation
:Copyright: |copy| 2022-2023 Intel Corporation
:Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
@@ -58,3 +58,58 @@ Each package_*_die_* contains the following attributes:
``current_freq_khz``
This attribute is used to get the current uncore frequency.
SoCs with TPMI (Topology Aware Register and PM Capsule Interface)
-----------------------------------------------------------------
An SoC can contain multiple power domains with individual or collection
of mesh partitions. This partition is called fabric cluster.
Certain type of meshes will need to run at the same frequency, they will
be placed in the same fabric cluster. Benefit of fabric cluster is that it
offers a scalable mechanism to deal with partitioned fabrics in a SoC.
The current sysfs interface supports controls at package and die level.
This interface is not enough to support more granular control at
fabric cluster level.
SoCs with the support of TPMI (Topology Aware Register and PM Capsule
Interface), can have multiple power domains. Each power domain can
contain one or more fabric clusters.
To represent controls at fabric cluster level in addition to the
controls at package and die level (like systems without TPMI
support), sysfs is enhanced. This granular interface is presented in the
sysfs with directories names prefixed with "uncore". For example:
uncore00, uncore01 etc.
The scope of control is specified by attributes "package_id", "domain_id"
and "fabric_cluster_id" in the directory.
Attributes in each directory:
``domain_id``
This attribute is used to get the power domain id of this instance.
``fabric_cluster_id``
This attribute is used to get the fabric cluster id of this instance.
``package_id``
This attribute is used to get the package id of this instance.
The other attributes are same as presented at package_*_die_* level.
In most of current use cases, the "max_freq_khz" and "min_freq_khz"
is updated at "package_*_die_*" level. This model will be still supported
with the following approach:
When user uses controls at "package_*_die_*" level, then every fabric
cluster is affected in that package and die. For example: user changes
"max_freq_khz" in the package_00_die_00, then "max_freq_khz" for uncore*
directory with the same package id will be updated. In this case user can
still update "max_freq_khz" at each uncore* level, which is more restrictive.
Similarly, user can update "min_freq_khz" at "package_*_die_*" level
to apply at each uncore* level.
Support for "current_freq_khz" is available only at each fabric cluster
level (i.e., in uncore* directory).