[U-Boot] [PATCH 5/5] omap5912-osk: Fix get_timer() and CONFIG_SYS_HZ
Jon Hunter
jon-hunter at ti.com
Tue Apr 9 23:41:33 CEST 2013
The function get_timer() should return time in ms and CONFIG_SYS_HZ
should be set to 1000 by default. Fix both of these items.
Signed-off-by: Jon Hunter <jon-hunter at ti.com>
---
arch/arm/cpu/arm926ejs/omap/timer.c | 15 ++++++++-------
include/configs/omap5912osk.h | 2 +-
2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/omap/timer.c b/arch/arm/cpu/arm926ejs/omap/timer.c
index 34ec7b2..16530b0 100644
--- a/arch/arm/cpu/arm926ejs/omap/timer.c
+++ b/arch/arm/cpu/arm926ejs/omap/timer.c
@@ -36,11 +36,14 @@
*/
#include <common.h>
+#include <asm/io.h>
-#define TIMER_LOAD_VAL 0xffffffff
+#define TIMER_CLOCK (CONFIG_SYS_CLK_FREQ / (2 << CONFIG_SYS_PTV))
+#define TIMER_LOAD_VAL 0xffffffff
/* macro to read the 32 bit timer */
-#define READ_TIMER (*(volatile ulong *)(CONFIG_SYS_TIMERBASE+8))
+#define READ_TIMER readl(CONFIG_SYS_TIMERBASE+8) \
+ / (TIMER_CLOCK / CONFIG_SYS_HZ)
DECLARE_GLOBAL_DATA_PTR;
@@ -114,7 +117,8 @@ ulong get_timer_masked (void)
* (TLV-now) amount of time after passing though -1
* nts = new "advancing time stamp"...it could also roll and cause problems.
*/
- timestamp += lastdec + TIMER_LOAD_VAL - now;
+ timestamp += lastdec + (TIMER_LOAD_VAL / (TIMER_CLOCK /
+ CONFIG_SYS_HZ)) - now;
}
lastdec = now;
@@ -160,8 +164,5 @@ unsigned long long get_ticks(void)
*/
ulong get_tbclk (void)
{
- ulong tbclk;
-
- tbclk = CONFIG_SYS_HZ;
- return tbclk;
+ return CONFIG_SYS_HZ;
}
diff --git a/include/configs/omap5912osk.h b/include/configs/omap5912osk.h
index 3276a50..c5797a2 100644
--- a/include/configs/omap5912osk.h
+++ b/include/configs/omap5912osk.h
@@ -134,7 +134,7 @@
*/
#define CONFIG_SYS_TIMERBASE 0xFFFEC500 /* use timer 1 */
#define CONFIG_SYS_PTV 7 /* 2^(PTV+1), divide by 256 */
-#define CONFIG_SYS_HZ ((CONFIG_SYS_CLK_FREQ)/(2 << CONFIG_SYS_PTV))
+#define CONFIG_SYS_HZ 1000
/*-----------------------------------------------------------------------
* Physical Memory Map
--
1.7.10.4
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