X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fimx-common%2Ftimer.c;h=e522990453915878695b0ee6b792c55adf3cf097;hb=10697704ca579850b0edc0e772671c32586d76ee;hp=65ef60bf2edb0a115d7bc48b1eb35dffa0b41901;hpb=bd5053ffa5b8162257537bdb79ba829372423096;p=u-boot

diff --git a/arch/arm/imx-common/timer.c b/arch/arm/imx-common/timer.c
index 65ef60bf2e..e522990453 100644
--- a/arch/arm/imx-common/timer.c
+++ b/arch/arm/imx-common/timer.c
@@ -176,3 +176,20 @@ 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;
+}