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| author |   Len Brown <len.brown@intel.com> | 2016-06-17 01:22:52 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-07-11 21:30:13 +0200 |
| commit | ff4c86635ee12461fd3bd911d7d5253394da8f9d (patch) | |
| tree | 46d410019a232f2b0ecc89375d68abcfc27f565e /arch/x86/include/asm/tsc.h | |
| parent | x86/tsc: Enumerate SKL cpu_khz and tsc_khz via CPUID (diff) | |
| download | linux-dev-ff4c86635ee12461fd3bd911d7d5253394da8f9d.tar.xz linux-dev-ff4c86635ee12461fd3bd911d7d5253394da8f9d.zip | |
x86/tsc: Enumerate BXT tsc_khz via CPUID
Hard code the BXT crystal clock (aka ART - Always Running Timer)
to 19.200 MHz, and use CPUID leaf 0x15 to determine the BXT TSC frequency.
Use tsc_khz to sanity check BXT cpu_khz,
which can be erroneous in some configurations.
(I simplified the original patch from Bin Gao.)
Original-From: Bin Gao <bin.gao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/bf4e7c175acd6d09719c47c319b10ff1f0627ff8.1466138954.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/tsc.h')
0 files changed, 0 insertions, 0 deletions