[tip:x86/timers] x86/tsc_msr: Add Airmont reference clock values

From	tip-bot for Len Brown <tipbot@zytor.com>
Newsgroups	linux.kernel
Subject	[tip:x86/timers] x86/tsc_msr: Add Airmont reference clock values
Date	2016-07-10 20:20 +0200
Message-ID	<rTruH-48u-37@gated-at.bofh.it> (permalink)
References	<rKUvT-2ml-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Commit-ID:  6fcb41cdaee5056c96de88ee095bddd27a7697de
Gitweb:     http://git.kernel.org/tip/6fcb41cdaee5056c96de88ee095bddd27a7697de
Author:     Len Brown <len.brown@intel.com>
AuthorDate: Fri, 17 Jun 2016 01:22:48 -0400
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 10 Jul 2016 17:00:13 +0200

x86/tsc_msr: Add Airmont reference clock values

per the Intel 64 and IA-32 Architecture Software Developer's Manual...

Add the reference clock for Intel Atom Processors
Based on the Airmont Microarchitecture.

Reported-by: Stephane Gasparini <stephane.gasparini@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/abc6a0f4b18281410da1a3f26e2819d8e03e144f.1466138954.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/kernel/tsc_msr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
index 20487e2..65b3d8cb 100644
--- a/arch/x86/kernel/tsc_msr.c
+++ b/arch/x86/kernel/tsc_msr.c
@@ -13,7 +13,7 @@
 #include <asm/apic.h>
 #include <asm/param.h>
 
-#define MAX_NUM_FREQS	8
+#define MAX_NUM_FREQS	9
 
 /*
  * If MSR_PERF_STAT[31] is set, the maximum resolved bus ratio can be
@@ -40,6 +40,9 @@ static struct freq_desc freq_desc_tables[] = {
 	{ 6, 0x37, 1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 } },
 	/* ANN - Intel Atom processor Z3500 series */
 	{ 6, 0x5a, 1, { 83300, 100000, 133300, 100000, 0, 0, 0, 0 } },
+	/* AMT - Intel Atom processor X7-Z8000 and X5-Z8000 series */
+	{ 6, 0x4c, 1, { 83300, 100000, 133300, 116700,
+			80000, 93300, 90000, 88900, 87500 } },
 };
 
 static int match_cpu(u8 family, u8 model)

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[tip:x86/timers] x86/tsc_msr: Add Airmont reference clock values tip-bot for Len Brown <tipbot@zytor.com> - 2016-07-10 20:20 +0200

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