mx5/6 timer: Round up tick_to_time() value

Round up tick_to_time() value instead of truncating it. This avoids stopping
waits instantly for low usec values, and this generally guarantees that the code
always waits for at least the requested duration.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/cpu/armv7/imx-common/timer.c b/arch/arm/cpu/armv7/imx-common/timer.c
index 1645ff8..e2725e1 100644 (file)
--- a/arch/arm/cpu/armv7/imx-common/timer.c
+++ b/arch/arm/cpu/armv7/imx-common/timer.c
@@ -61,7 +61,7 @@ static inline unsigned long long tick_to_time(unsigned long long tick)
 
 static inline unsigned long long us_to_tick(unsigned long long usec)
 {
-       usec *= CLK_32KHZ;
+       usec = usec * CLK_32KHZ + 999999;
        do_div(usec, 1000000);
 
        return usec;