linux-kernel - [PATCH 0/6] AMD Pstate Fixes And Enhancements

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Message-ID: <cover.1706690577.git.perry.yuan@amd.com>
Date: Wed, 31 Jan 2024 16:50:15 +0800
From: Perry Yuan <perry.yuan@....com>
To: <rafael.j.wysocki@...el.com>, <Mario.Limonciello@....com>,
	<viresh.kumar@...aro.org>, <Ray.Huang@....com>, <gautham.shenoy@....com>,
	<Borislav.Petkov@....com>
CC: <Alexander.Deucher@....com>, <Xinmei.Huang@....com>,
	<Xiaojian.Du@....com>, <Li.Meng@....com>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 0/6] AMD Pstate Fixes And Enhancements

The patch series adds some fixes and enhancements to the AMD pstate driver.
It enables CPPC v2 for certain processors in the family 17H, as requested
by TR40 processor users who expect improved performance and lower system
temperature. 

Additionally, it fixes the initialization of nominal_freq for each cpudata
and changes latency and delay values to be read from platform firmware firstly
for more accurate timing. 

A new quirk is also added for legacy processors that lack CPPC capabilities,
which caused the pstate driver to fail loading. 

I would greatly appreciate any feedbacks.

Thank you!

Perry Yuan (6):
  ACPI: CPPC: enable AMD CPPC V2 support for family 17h processors
  cpufreq:amd-pstate: fix the nominal freq value set
  cpufreq:amd-pstate: initialize nominal_freq of each cpudata
  cpufreq:amd-pstate: get pstate transition delay and latency value from
    ACPI tables
  cppc_acpi: print error message if CPPC is unsupported
  cpufreq:amd-pstate: add quirk for the pstate CPPC capabilities missing

 arch/x86/kernel/acpi/cppc.c  |   2 +-
 drivers/acpi/cppc_acpi.c     |   6 +-
 drivers/cpufreq/amd-pstate.c | 112 ++++++++++++++++++++++++++++-------
 include/linux/amd-pstate.h   |   6 ++
 4 files changed, 102 insertions(+), 24 deletions(-)

-- 
2.34.1