| Message ID | c4f669a8-0da6-862a-0450-ddf178272bdd@zhaoxin.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [V2] cpufreq: Add Zhaoxin/Centaur turbo boost control interface support | expand |
On Thu, Jun 23, 2022 at 3:21 AM Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> wrote: > > 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> > --- > drivers/cpufreq/acpi-cpufreq.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c > index 3d514b8..1bb2b90 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; > -- Applied as 5.20 material. However, I had to manually fix up the formatting of the patch. Can you please configure your e-mail client so that this is not necessary in the future? Thanks!
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 3d514b8..1bb2b90 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;
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> --- drivers/cpufreq/acpi-cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+)