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cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update

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When amd_pstate is running, writing to scaling_min_freq and
scaling_max_freq has no effect. These values are only passed to the
policy level, but not to the platform level. This means that the
platform does not know about the frequency limits set by the user.

To fix this, update the min_perf and max_perf values at the platform
level whenever the user changes the scaling_min_freq and scaling_max_freq
values.

Fixes: ffa5096a7c ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Wyes Karny
2023-11-17 06:38:39 +00:00
committed by Rafael J. Wysocki
parent bb87be267b
commit febab20cae
2 changed files with 51 additions and 13 deletions
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4
include/linux/amd-pstate.h
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@@ -70,6 +70,10 @@ struct amd_cpudata {
u32 nominal_perf;
u32 lowest_nonlinear_perf;
u32 lowest_perf;
u32 min_limit_perf;
u32 max_limit_perf;
u32 min_limit_freq;
u32 max_limit_freq;
u32 max_freq;
u32 min_freq;