1 files changed, 28 insertions, 1 deletions

diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 944b2c1659d8..a97f091fcf2b 100644
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -130,10 +130,37 @@ out:
                         cpu_info->caps |= CPUPOWER_CAP_AMD_CBP;
         }
 
-        /* Intel's perf-bias MSR support */
         if (cpu_info->vendor == X86_VENDOR_INTEL) {
+                /* Intel's perf-bias MSR support */
                 if (cpuid_level >= 6 && (cpuid_ecx(6) & (1 << 3)))
                         cpu_info->caps |= CPUPOWER_CAP_PERF_BIAS;
+
+                /* Intel's Turbo Ratio Limit support */
+                if (cpu_info->family == 6) {
+                        switch (cpu_info->model) {
+                        case 0x1A:      /* Core i7, Xeon 5500 series
+                                         * Bloomfield, Gainstown NHM-EP
+                                         */
+                        case 0x1E:      /* Core i7 and i5 Processor
+                                         * Clarksfield, Lynnfield, Jasper Forest
+                                         */
+                        case 0x1F:      /* Core i7 and i5 Processor - Nehalem */
+                        case 0x25:      /* Westmere Client
+                                         * Clarkdale, Arrandale
+                                         */
+                        case 0x2C:      /* Westmere EP - Gulftown */
+                                cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
+                        case 0x2A:      /* SNB */
+                        case 0x2D:      /* SNB Xeon */
+                                cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
+                                cpu_info->caps |= CPUPOWER_CAP_IS_SNB;
+                                break;
+                        case 0x2E:      /* Nehalem-EX Xeon - Beckton */
+                        case 0x2F:      /* Westmere-EX Xeon - Eagleton */
+                        default:
+                                break;
+                        }
+                }
         }
 
         /*      printf("ID: %u - Extid: 0x%x - Caps: 0x%llx\n",