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Message-ID: <cover.1707273526.git.perry.yuan@amd.com>
Date: Wed, 7 Feb 2024 10:46:09 +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 v5 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!
Changes from v4:
* improve the dmi matching rule with zen2 flag only
Changes from v3:
* change quirk matching broken BIOS with family/model ID and Zen2
flag to fix the CPPC definition issue
* fix typo in quirk
Changes from v2:
* change quirk matching to BIOS version and release (Mario)
* pick up RB flag from Mario
Changes from v1:
* pick up the RB flags from Mario
* address review comment of patch #6 for amd_get_nominal_freq()
* rebased the series to linux-pm/bleeding-edge v6.8.0-rc2
* update debug log for patch #5 as Mario suggested.
* fix some typos and format problems
* tested on 7950X platform
V1: https://lore.kernel.org/lkml/63c2b3d7-083a-4daa-ba40-629b3223a92d@mailbox.org/
V2: https://lore.kernel.org/all/cover.1706863981.git.perry.yuan@amd.com/
v3: https://lore.kernel.org/lkml/cover.1707016927.git.perry.yuan@amd.com/
v4: https://lore.kernel.org/lkml/cover.1707193566.git.perry.yuan@amd.com/
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 | 4 +-
drivers/cpufreq/amd-pstate.c | 116 ++++++++++++++++++++++++++++++-----
include/linux/amd-pstate.h | 6 ++
4 files changed, 109 insertions(+), 19 deletions(-)
--
2.34.1
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