[U-Boot] [PATCH] arm: imx-common: introduce back usec2ticks

[Peng Fan <van.freenix@gmail.com>]

Hi Stefano,

Kindly ping..

Thanks,
Peng.
On Fri, Apr 29, 2016 at 09:56:09AM +0800, Peng Fan wrote:
>This commit "2bb014820c49a63902103bac710bc86b5772e843"
>do some clean up to use the code in lib/time.c.
>But usec2ticks is still being used by security related job ring code.
>Bring back the function to avoid build break.
>
>Signed-off-by: Peng Fan <van.freenix@gmail.com>
>Cc: Stefano Babic <sbabic@denx.de>
>---
> arch/arm/imx-common/timer.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
>diff --git a/arch/arm/imx-common/timer.c b/arch/arm/imx-common/timer.c
>index 92c7218..bde24af 100644
>--- a/arch/arm/imx-common/timer.c
>+++ b/arch/arm/imx-common/timer.c
>@@ -124,3 +124,20 @@ 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)
>+{
>+	ulong ticks;
>+
>+	if (usec < 1000)
>+		ticks = ((usec * (get_tbclk()/1000)) + 500) / 1000;
>+	else
>+		ticks = ((usec / 10) * (get_tbclk() / 100000));
>+
>+	return ticks;
>+}
>-- 
>2.6.2
>