tools/power turbostat: decode BXT TSC frequency via CPUID
Hard-code BXT ART to 19200MHz, so turbostat --debug
can fully enumerate TSC:
CPUID(0x15): eax_crystal: 3 ebx_tsc: 186 ecx_crystal_hz: 0
TSC: 1190 MHz (19200000 Hz * 186 / 3 / 1000000)
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 96d8eaf..b15c843 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -3278,7 +3278,10 @@
switch(model) {
case 0x4E: /* SKL */
case 0x5E: /* SKL */
- crystal_hz = 24000000; /* 24 MHz */
+ crystal_hz = 24000000; /* 24.0 MHz */
+ break;
+ case 0x5C: /* BXT */
+ crystal_hz = 19200000; /* 19.2 MHz */
break;
default:
crystal_hz = 0;