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tools/power turbostat: decode BXT TSC frequency via CPUID

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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>
This commit is contained in:
Len Brown 2016-04-06 17:15:57 -04:00 committed by Rafael J. Wysocki
parent e4085d543e
commit e8efbc80db
1 changed files with 4 additions and 1 deletions
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5
tools/power/x86/turbostat/turbostat.c
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@ -3278,7 +3278,10 @@ void process_cpuid()
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;