From 3e4daf1345a6fbe55871076c71e3c212a3cf3565 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Tue, 7 Sep 2010 07:53:26 +0000 Subject: 2ms is enough time to accurately obtain the clock rate. Signed-off-by: Kevin O'Connor Acked-by: Patrick Georgi git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5780 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/cpu/x86/tsc/delay_tsc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/cpu/x86') diff --git a/src/cpu/x86/tsc/delay_tsc.c b/src/cpu/x86/tsc/delay_tsc.c index 27c89e3a94..1127867638 100644 --- a/src/cpu/x86/tsc/delay_tsc.c +++ b/src/cpu/x86/tsc/delay_tsc.c @@ -18,8 +18,8 @@ static unsigned long clocks_per_usec; * device. */ -#define CALIBRATE_INTERVAL ((20*CLOCK_TICK_RATE)/1000) /* 20ms */ -#define CALIBRATE_DIVISOR (20*1000) /* 20ms / 20000 == 1usec */ +#define CALIBRATE_INTERVAL ((2*CLOCK_TICK_RATE)/1000) /* 2ms */ +#define CALIBRATE_DIVISOR (2*1000) /* 2ms / 2000 == 1usec */ static unsigned long long calibrate_tsc(void) { -- cgit v1.2.3