[U-Boot] [PATCH] nds32: ag101/ag102: Fix setting lastdec and now values

[U-Boot] [PATCH] nds32: ag101/ag102: Fix setting lastdec and now values

[Axel Lin]

The timer3 counter unit for lastdesc and now values are inconsistent in current
code. The unit of "readl(&tmr->timer3_counter) / (CONFIG_SYS_CLK_FREQ / 2)" is
second. However, CONFIG_SYS_HZ is defined as 1000 in board config file.
This means the accuracy of "lastdec" and "now" should be in millisecond,
thus fix the equation to set lastdec and now variables accordingly.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
Hi Kuan-Yu,
This change is based on your suggestion.
I don't have this hardware, can you test if this patch works?

Thanks,
Axel
 arch/nds32/cpu/n1213/ag101/timer.c | 7 ++++---
 arch/nds32/cpu/n1213/ag102/timer.c | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/nds32/cpu/n1213/ag101/timer.c b/arch/nds32/cpu/n1213/ag101/timer.c
index caa36b8..926091f 100644
--- a/arch/nds32/cpu/n1213/ag101/timer.c
+++ b/arch/nds32/cpu/n1213/ag101/timer.c
@@ -86,7 +86,8 @@ void reset_timer_masked(void)
 #ifdef CONFIG_FTTMR010_EXT_CLK
 	lastdec = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ);
 #else
-	lastdec = readl(&tmr->timer3_counter) / (CONFIG_SYS_CLK_FREQ / 2);
+	lastdec = readl(&tmr->timer3_counter) /
+			(CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ);
 #endif
 	timestamp = 0;		/* start "advancing" time stamp from 0 */
 
@@ -110,8 +111,8 @@ ulong get_timer_masked(void)
 #ifdef CONFIG_FTTMR010_EXT_CLK
 	ulong now = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ);
 #else
-	ulong now = readl(&tmr->timer3_counter) / \
-			(CONFIG_SYS_CLK_FREQ / 2 / 1024);
+	ulong now = readl(&tmr->timer3_counter) /
+			(CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ);
 #endif
 
 	debug("%s(): now = %lx, lastdec = %lx\n", __func__, now, lastdec);
diff --git a/arch/nds32/cpu/n1213/ag102/timer.c b/arch/nds32/cpu/n1213/ag102/timer.c
index caa36b8..926091f 100644
--- a/arch/nds32/cpu/n1213/ag102/timer.c
+++ b/arch/nds32/cpu/n1213/ag102/timer.c
@@ -86,7 +86,8 @@ void reset_timer_masked(void)
 #ifdef CONFIG_FTTMR010_EXT_CLK
 	lastdec = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ);
 #else
-	lastdec = readl(&tmr->timer3_counter) / (CONFIG_SYS_CLK_FREQ / 2);
+	lastdec = readl(&tmr->timer3_counter) /
+			(CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ);
 #endif
 	timestamp = 0;		/* start "advancing" time stamp from 0 */
 
@@ -110,8 +111,8 @@ ulong get_timer_masked(void)
 #ifdef CONFIG_FTTMR010_EXT_CLK
 	ulong now = readl(&tmr->timer3_counter) / (TIMER_CLOCK / CONFIG_SYS_HZ);
 #else
-	ulong now = readl(&tmr->timer3_counter) / \
-			(CONFIG_SYS_CLK_FREQ / 2 / 1024);
+	ulong now = readl(&tmr->timer3_counter) /
+			(CONFIG_SYS_CLK_FREQ / 2 / CONFIG_SYS_HZ);
 #endif
 
 	debug("%s(): now = %lx, lastdec = %lx\n", __func__, now, lastdec);
-- 
1.8.1.2

[U-Boot] [PATCH] nds32: ag101/ag102: Fix setting lastdec and now values

[Macpaul Lin]

Hi Axel,

2013/7/8 Axel Lin <axel.lin@ingics.com>:
> The timer3 counter unit for lastdesc and now values are inconsistent in current
> code. The unit of "readl(&tmr->timer3_counter) / (CONFIG_SYS_CLK_FREQ / 2)" is
> second. However, CONFIG_SYS_HZ is defined as 1000 in board config file.
> This means the accuracy of "lastdec" and "now" should be in millisecond,
> thus fix the equation to set lastdec and now variables accordingly.
>
> Signed-off-by: Axel Lin <axel.lin@ingics.com>
> ---
> Hi Kuan-Yu,
> This change is based on your suggestion.
> I don't have this hardware, can you test if this patch works?
>
> Thanks,

Applied to u-boot-nds32/master
Thanks for your help!

-- 
Best regards,
Macpaul Lin