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| author | Kevin O'Connor <kevin@koconnor.net> | 2010-09-07 07:53:26 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-09-07 07:53:26 +0000 |
| commit | 3e4daf1345a6fbe55871076c71e3c212a3cf3565 (patch) | |
| tree | fabce52bd404b562a4af747a5ab6c7b7872fa674 /src/cpu/x86 | |
| parent | 34697d67c18780bf765ac9f66dcb1f14c7ef74c8 (diff) | |
| download | coreboot-3e4daf1345a6fbe55871076c71e3c212a3cf3565.tar.xz | |
2ms is enough time to accurately obtain the clock rate.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5780 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/tsc/delay_tsc.c | 4 |
1 files changed, 2 insertions, 2 deletions
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) { |