Messages in this thread | | | Subject | Re: [PATCH] cpufreq: Add Zhaoxin turbo boost control interface support | From | Tony W Wang-oc <> | Date | Thu, 23 Jun 2022 09:11:43 +0800 |
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On 22/6/2022 21:39, Rafael J. Wysocki wrote: > On Wed, Jun 22, 2022 at 5:44 AM Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> wrote: >> >> Recent Zhaoxin 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 Zhaoxin too. > > And for Centaur too according to the code changes below.
Ok, thanks a lot.
> >> >> 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; >> -- >> 2.7.4 > . >
-- Sincerely TonyWWang-oc
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