Since we are using the code from Linux, update it to the newer version in v6.11
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/timer/tsc_timer.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c index 2f2c2f27b7f..dd16ab320b2 100644 --- a/drivers/timer/tsc_timer.c +++ b/drivers/timer/tsc_timer.c @@ -83,7 +83,7 @@ static unsigned long cpu_mhz_from_cpuid(void) if (cpuid_eax(0) < 0x16) return 0;
- return cpuid_eax(0x16); + return cpuid_eax(0x15); }
/* @@ -299,10 +299,19 @@ static unsigned long __maybe_unused quick_pit_calibrate(void) if (!pit_expect_msb(0xff-i, &delta, &d2)) break;
+ delta -= tsc; + + /* + * Extrapolate the error and fail fast if the error will + * never be below 500 ppm. + */ + if (i == 1 && + d1 + d2 >= (delta * MAX_QUICK_PIT_ITERATIONS) >> 11) + return 0; + /* * Iterate until the error is less than 500 ppm */ - delta -= tsc; if (d1+d2 >= delta >> 11) continue;