Commit e8efbc80 authored Apr 06, 2016 by Len Brown Committed by Rafael J. Wysocki Apr 07, 2016

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>

parent e4085d54

tools/power/x86/turbostat/turbostat.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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;