diff options
| -rw-r--r-- | src/soc/nvidia/tegra132/timer.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra132/timer.c b/src/soc/nvidia/tegra132/timer.c index e2b0b82f1e..4a43208f61 100644 --- a/src/soc/nvidia/tegra132/timer.c +++ b/src/soc/nvidia/tegra132/timer.c @@ -28,4 +28,18 @@ void init_timer(void) void udelay(unsigned usec) { + struct mono_time current, end; + + if (!thread_yield_microseconds(usec)) + return; + + /* + * As the hardware clock granularity is in microseconds pad the + * requested delay by one to get at least >= requested usec delay. + */ + timer_monotonic_get(&end); + mono_time_add_usecs(&end, usec + 1); + do { + timer_monotonic_get(¤t); + } while (mono_time_before(¤t, &end)); } |