From: Aneesh Bansal <aneesh.bansal@freescale.com>
Date: Tue, 8 Dec 2015 08:24:26 +0000 (+0530)
Subject: armv8: define usec2ticks function
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=b644d3e932f133bbb8b577c1965eae399b7df99e;p=u-boot.git

armv8: define usec2ticks function

usec2ticks() function has been defined for ARMv8 which will
be used by SEC Driver.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
---

diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c
index 8e60baebc5..8f47a82043 100644
--- a/arch/arm/cpu/armv8/generic_timer.c
+++ b/arch/arm/cpu/armv8/generic_timer.c
@@ -40,3 +40,14 @@ unsigned long timer_read_counter(void)
 #endif
 	return cntpct;
 }
+
+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;
+}