cpufreq: acpi-cpufreq: Zhaoxin: fix incorrect max-freq issue

Workaround for incorrect max frequency calculation on Zhaoxin/Centaur CPUs. Signed-off-by: LeoLiu-oc <[email protected]>
deepin-community · Dec 23, 2024 · 5f7681e · 5f7681e
1 parent 5dea47c
commit 5f7681e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
@@ -637,6 +637,10 @@ static u64 get_max_boost_ratio(unsigned int cpu)
 	if (acpi_pstate_strict)
 		return 0;
 
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_ZHAOXIN ||
+	    boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR)
+		return 0;
+
 	ret = cppc_get_perf_caps(cpu, &perf_caps);
 	if (ret) {
 		pr_debug("CPU%d: Unable to get performance capabilities (%d)\n",