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| author | Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> | 2022-06-23 09:21:26 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-06-29 20:14:39 +0200 |
| commit | d6f895965592d5cd2771860639219964df85d555 (patch) | |
| tree | c7caa3a36b26e73b0f5f42600373a152114e5109 /drivers/cpufreq/acpi-cpufreq.c | |
| parent | 9ab9b9d3fb9231cdcfda8e0fb3d9c24a2f95ed26 (diff) | |
| download | linux-stable-d6f895965592d5cd2771860639219964df85d555.tar.gz linux-stable-d6f895965592d5cd2771860639219964df85d555.tar.bz2 linux-stable-d6f895965592d5cd2771860639219964df85d555.zip | |
cpufreq: ACPI: Add Zhaoxin/Centaur turbo boost control interface support
Recent Zhaoxin/Centaur CPUs support X86_FEATURE_IDA and the turbo boost
can be dynamically enabled or disabled through MSR 0x1a0[38] in the same
way as Intel. So add turbo boost control support for these CPUs too.
Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/acpi-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/acpi-cpufreq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 3d514b82d055..1bb2b90ebb21 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -78,6 +78,8 @@ static bool boost_state(unsigned int cpu) switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_INTEL: + case X86_VENDOR_CENTAUR: + case X86_VENDOR_ZHAOXIN: rdmsr_on_cpu(cpu, MSR_IA32_MISC_ENABLE, &lo, &hi); msr = lo | ((u64)hi << 32); return !(msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE); @@ -97,6 +99,8 @@ static int boost_set_msr(bool enable) switch (boot_cpu_data.x86_vendor) { case X86_VENDOR_INTEL: + case X86_VENDOR_CENTAUR: + case X86_VENDOR_ZHAOXIN: msr_addr = MSR_IA32_MISC_ENABLE; msr_mask = MSR_IA32_MISC_ENABLE_TURBO_DISABLE; break; |