diff options
Diffstat (limited to 'arch/arm/imx-common/timer.c')
-rw-r--r-- | arch/arm/imx-common/timer.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/imx-common/timer.c b/arch/arm/imx-common/timer.c index fb1b693161e..1f7c671ebe2 100644 --- a/arch/arm/imx-common/timer.c +++ b/arch/arm/imx-common/timer.c @@ -120,3 +120,19 @@ ulong get_tbclk(void) { return gpt_get_clk(); } + +/* + * This function is intended for SHORT delays only. + * It will overflow at around 10 seconds @ 400MHz, + * or 20 seconds @ 200MHz. + */ +unsigned long usec2ticks(unsigned long _usec) +{ + unsigned long long usec = _usec; + + usec *= get_tbclk(); + usec += 999999; + do_div(usec, 1000000); + + return usec; +} |