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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-05-10 11:42:04 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-05-10 11:42:04 +0200 |
| commit | 9b0087147da0a0175d376cd636bc795f2e943f95 (patch) | |
| tree | 6f6e7d9609238764841d82f68724c991c4929e53 | |
| parent | dbe442e1042c53625367e87938ad71156dd5f78f (diff) | |
| parent | bf202e654bfa57fb8cf9d93d4c6855890b70b9c4 (diff) | |
| download | renesas-drivers-9b0087147da0a0175d376cd636bc795f2e943f95.tar.gz | |
Merge branch 'pm-cpufreq' into linux-next
Notice: this object is not reachable from any branch.
* pm-cpufreq:
cpufreq: amd-pstate: fix the highest frequency issue which limits performance
Notice: this object is not reachable from any branch.
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 2db095867d039f..6a342b0c014034 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -50,7 +50,8 @@ #define AMD_PSTATE_TRANSITION_LATENCY 20000 #define AMD_PSTATE_TRANSITION_DELAY 1000 -#define AMD_PSTATE_PREFCORE_THRESHOLD 166 +#define CPPC_HIGHEST_PERF_PERFORMANCE 196 +#define CPPC_HIGHEST_PERF_DEFAULT 166 /* * TODO: We need more time to fine tune processors with shared memory solution @@ -326,6 +327,21 @@ static inline int amd_pstate_enable(bool enable) return static_call(amd_pstate_enable)(enable); } +static u32 amd_pstate_highest_perf_set(struct amd_cpudata *cpudata) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + + /* + * For AMD CPUs with Family ID 19H and Model ID range 0x70 to 0x7f, + * the highest performance level is set to 196. + * https://bugzilla.kernel.org/show_bug.cgi?id=218759 + */ + if (c->x86 == 0x19 && (c->x86_model >= 0x70 && c->x86_model <= 0x7f)) + return CPPC_HIGHEST_PERF_PERFORMANCE; + + return CPPC_HIGHEST_PERF_DEFAULT; +} + static int pstate_init_perf(struct amd_cpudata *cpudata) { u64 cap1; @@ -342,7 +358,7 @@ static int pstate_init_perf(struct amd_cpudata *cpudata) * the default max perf. */ if (cpudata->hw_prefcore) - highest_perf = AMD_PSTATE_PREFCORE_THRESHOLD; + highest_perf = amd_pstate_highest_perf_set(cpudata); else highest_perf = AMD_CPPC_HIGHEST_PERF(cap1); @@ -366,7 +382,7 @@ static int cppc_init_perf(struct amd_cpudata *cpudata) return ret; if (cpudata->hw_prefcore) - highest_perf = AMD_PSTATE_PREFCORE_THRESHOLD; + highest_perf = amd_pstate_highest_perf_set(cpudata); else highest_perf = cppc_perf.highest_perf; |