Patchwork [U-Boot,1/2,V2] EXYNOS: Export timer_get_us() to get microsecond timer

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Submitter Rajeshwari Birje
Date May 17, 2013, 12:52 p.m.
Message ID <1368795178-25909-2-git-send-email-rajeshwari.s@samsung.com>
Download mbox | patch
Permalink /patch/244632/
State New
Delegated to: Minkyu Kang
Headers show

Comments

Rajeshwari Birje - May 17, 2013, 12:52 p.m.
This function, if implemented by the board, provides a microsecond
timer. The granularity may be larger than 1us if hardware does not
support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
---
Changes in V2:
	- Removed #ifdefine for exported function.
 include/common.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

Patch

diff --git a/include/common.h b/include/common.h
index 0cfa6a8..7e54fd7 100644
--- a/include/common.h
+++ b/include/common.h
@@ -577,6 +577,12 @@  void ddr_enable_ecc(unsigned int dram_size);
 #endif
 #endif
 
+/*
+ * Return the current value of a monotonically increasing microsecond timer.
+ * Granularity may be larger than 1us if hardware does not support this.
+ */
+ulong timer_get_us(void);
+
 /* $(CPU)/cpu.c */
 static inline int cpumask_next(int cpu, unsigned int mask)
 {