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* [U-Boot] [PATCH] arm: imx-common: introduce back usec2ticks
@ 2016-04-29  1:56 Peng Fan
  2016-05-02 23:41 ` Tom Rini
  2016-05-10  9:30 ` Peng Fan
  0 siblings, 2 replies; 7+ messages in thread
From: Peng Fan @ 2016-04-29  1:56 UTC (permalink / raw)
  To: u-boot

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

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2016-05-10 13:20 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-04-29  1:56 [U-Boot] [PATCH] arm: imx-common: introduce back usec2ticks Peng Fan
2016-05-02 23:41 ` Tom Rini
2016-05-03  1:17   ` Peng Fan
2016-05-03  2:04     ` Tom Rini
2016-05-03  2:32       ` Peng Fan
2016-05-10  9:30 ` Peng Fan
2016-05-10 13:20   ` Stefano Babic

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