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nds32: ag101/ag102: Fix setting lastdec and now values 

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>
This commit is contained in:
Axel Lin 2013-07-08 14:29:52 +08:00 committed by Macpaul Lin
parent e3c58b0292
commit 4fc9670513
2 changed files with 8 additions and 6 deletions
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7
arch/nds32/cpu/n1213/ag101/timer.c
View File

@ -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);

7
arch/nds32/cpu/n1213/ag102/timer.c
View File

@ -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);