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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-05-02 13:41:42 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-05-02 13:41:42 +0300 |
| commit | c7e29dcef9ca4a93eed092e6739277a92a64fbe3 (patch) | |
| tree | 9c7cb4ec2c1a79a849951c4ba966463c0e0b25fb /include/linux | |
| parent | a2bd1d268e5d6411ddf3a10cdd3d964aad621cab (diff) | |
| parent | 70f83f525304079746e53027963cd732543e11c8 (diff) | |
| download | linux-c7e29dcef9ca4a93eed092e6739277a92a64fbe3.tar.xz | |
Merge branch 'amd-pstate'
Merge AMD P-state driver changes from Perry Yuan for v6.10:
"- Enable CPPC v2 for certain processors in the family 17H, as requested
by TR40 processor users who expect improved performance and lower
system temperature.
- Change latency and delay values to be read from platform firmware
firstly for more accurate timing.
- A new quirk is introduced for supporting amd-pstate on legacy
processors which either lack CPPC capability, or only only have CPPC
v2 capability."
* amd-pstate:
MAINTAINERS: cpufreq: amd-pstate: Add co-maintainers and reviewer
cpufreq: amd-pstate: remove unused variable lowest_nonlinear_freq
cpufreq: amd-pstate: fix code format problems
cpufreq: amd-pstate: Add quirk for the pstate CPPC capabilities missing
cppc_acpi: print error message if CPPC is unsupported
cpufreq: amd-pstate: get transition delay and latency value from ACPI tables
cpufreq: amd-pstate: Bail out if min/max/nominal_freq is 0
cpufreq: amd-pstate: Remove amd_get_{min,max,nominal,lowest_nonlinear}_freq()
cpufreq: amd-pstate: Unify computation of {max,min,nominal,lowest_nonlinear}_freq
cpufreq: amd-pstate: Document the units for freq variables in amd_cpudata
cpufreq: amd-pstate: Document *_limit_* fields in struct amd_cpudata
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/amd-pstate.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h index d21838835abd..d58fc022ec46 100644 --- a/include/linux/amd-pstate.h +++ b/include/linux/amd-pstate.h @@ -49,13 +49,17 @@ struct amd_aperf_mperf { * @lowest_perf: the absolute lowest performance level of the processor * @prefcore_ranking: the preferred core ranking, the higher value indicates a higher * priority. - * @max_freq: the frequency that mapped to highest_perf - * @min_freq: the frequency that mapped to lowest_perf - * @nominal_freq: the frequency that mapped to nominal_perf - * @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf + * @min_limit_perf: Cached value of the performance corresponding to policy->min + * @max_limit_perf: Cached value of the performance corresponding to policy->max + * @min_limit_freq: Cached value of policy->min (in khz) + * @max_limit_freq: Cached value of policy->max (in khz) + * @max_freq: the frequency (in khz) that mapped to highest_perf + * @min_freq: the frequency (in khz) that mapped to lowest_perf + * @nominal_freq: the frequency (in khz) that mapped to nominal_perf + * @lowest_nonlinear_freq: the frequency (in khz) that mapped to lowest_nonlinear_perf * @cur: Difference of Aperf/Mperf/tsc count between last and current sample * @prev: Last Aperf/Mperf/tsc count value read from register - * @freq: current cpu frequency value + * @freq: current cpu frequency value (in khz) * @boost_supported: check whether the Processor or SBIOS supports boost mode * @hw_prefcore: check whether HW supports preferred core featue. * Only when hw_prefcore and early prefcore param are true, @@ -124,4 +128,10 @@ static const char * const amd_pstate_mode_string[] = { [AMD_PSTATE_GUIDED] = "guided", NULL, }; + +struct quirk_entry { + u32 nominal_freq; + u32 lowest_freq; +}; + #endif /* _LINUX_AMD_PSTATE_H */ |