1 files changed, 21 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index feef10c085a1..f6b32d112357 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -649,6 +649,20 @@ static void print_basics(struct powernow_k8_data *data)
                                 data->batps);
 }
 
+static u32 freq_from_fid_did(u32 fid, u32 did)
+{
+        u32 mhz = 0;
+
+        if (boot_cpu_data.x86 == 0x10)
+                mhz = (100 * (fid + 0x10)) >> did;
+        else if (boot_cpu_data.x86 == 0x11)
+                mhz = (100 * (fid + 8)) >> did;
+        else
+                BUG();
+
+        return mhz * 1000;
+}
+
 static int fill_powernow_table(struct powernow_k8_data *data,
                 struct pst_s *pst, u8 maxvid)
 {
@@ -923,8 +937,13 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data,
 
                 powernow_table[i].index = index;
 
-                powernow_table[i].frequency =
-                        data->acpi_data.states[i].core_frequency * 1000;
+                /* Frequency may be rounded for these */
+                if (boot_cpu_data.x86 == 0x10 || boot_cpu_data.x86 == 0x11) {
+                        powernow_table[i].frequency =
+                                freq_from_fid_did(lo & 0x3f, (lo >> 6) & 7);
+                } else
+                        powernow_table[i].frequency =
+                                data->acpi_data.states[i].core_frequency * 1000;
         }
         return 0;
 }