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[U-Boot,1/5,v5] armv8: define usec2ticks function

Message ID 1449563070-5761-1-git-send-email-aneesh.bansal@freescale.com
State Accepted
Delegated to: York Sun
Headers show

Commit Message

Aneesh Bansal Dec. 8, 2015, 8:24 a.m. UTC 
usec2ticks() function has been defined for ARMv8 which will
be used by SEC Driver.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
---
Changes in v5:
- Commit Subject modified

Changes in v4: None

Changes in v3: None

Changes in v2: None (New Patch set created with an additional patch)

 arch/arm/cpu/armv8/generic_timer.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

York Sun Dec. 15, 2015, 1:06 a.m. UTC | #1 
On 12/08/2015 04:24 PM, Aneesh Bansal wrote:
> usec2ticks() function has been defined for ARMv8 which will
> be used by SEC Driver.
> 
> Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
> ---
> Changes in v5:
> - Commit Subject modified
> 
> Changes in v4: None
> 
> Changes in v3: None
> 
> Changes in v2: None (New Patch set created with an additional patch)
> 

Applied to fsl-qoriq master. Awaiting upstream.

York
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Patch

diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c
index 8e60bae..8f47a82 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;
+}