From: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Date: Tue, 14 Aug 2012 05:01:21 +0000 (+0000)
Subject: mx5/6 timer: Round up tick_to_time() value
X-Git-Tag: v2012.10-rc1~173
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=68d919d42053af99c5220d0469aa4b3de2ae1c55;p=u-boot

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 1645ff83f4..e2725e1a64 100644
--- 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;