From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mx5/6 timer: Round up tick_to_time() value
Date: Mon, 20 Aug 2012 09:56:27 +0200 [thread overview]
Message-ID: <5031EDAB.5090103@denx.de> (raw)
In-Reply-To: <1237768720.2403509.1344956481504.JavaMail.root@advansee.com>
On 14/08/2012 17:01, Beno?t Th?baudeau wrote:
> 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: Beno?t Th?baudeau <benoit.thebaudeau@advansee.com>
> Cc: Stefano Babic <sbabic@denx.de>
> ---
> .../arch/arm/cpu/armv7/imx-common/timer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git u-boot-4d3c95f.orig/arch/arm/cpu/armv7/imx-common/timer.c u-boot-4d3c95f/arch/arm/cpu/armv7/imx-common/timer.c
> index 1645ff8..e2725e1 100644
> --- u-boot-4d3c95f.orig/arch/arm/cpu/armv7/imx-common/timer.c
> +++ u-boot-4d3c95f/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;
>
Applied to u-boot-imx, thanks.
Best regards,
Stefano Babic
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prev parent reply other threads:[~2012-08-20 7:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-14 15:01 [U-Boot] [PATCH] mx5/6 timer: Round up tick_to_time() value Benoît Thébaudeau
2012-08-17 19:55 ` Stefano Babic
2012-08-20 7:56 ` Stefano Babic [this message]
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