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| author | Minkyu Kang <mk7.kang@samsung.com> | 2010-11-19 17:00:26 +0900 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2010-11-30 09:07:07 +0900 |
| commit | d3b0d628b08ab999a99c4ee30eaac1406a5d7056 (patch) | |
| tree | c7c6fc96e2d771fc22dededc99575cb62c6e14c0 /arch/arm | |
| parent | 177feff303538c6cf8caaeb34e5243ca95563e1c (diff) | |
| download | u-boot-imx-d3b0d628b08ab999a99c4ee30eaac1406a5d7056.zip u-boot-imx-d3b0d628b08ab999a99c4ee30eaac1406a5d7056.tar.gz u-boot-imx-d3b0d628b08ab999a99c4ee30eaac1406a5d7056.tar.bz2 | |
ARMV7: S5P: timer: get the count_value from register when call udelay
Because of count_value is set to tcnb4 register,
should be get from this register when call udelay function.
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/s5p-common/timer.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c index 0490650..651fd5d 100644 --- a/arch/arm/cpu/armv7/s5p-common/timer.c +++ b/arch/arm/cpu/armv7/s5p-common/timer.c @@ -65,15 +65,12 @@ int timer_init(void) writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0); writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1); - if (count_value == 0) { - /* reset initial value */ - /* count_value = 2085937.5(HZ) (per 1 sec)*/ - count_value = get_pwm_clk() / ((PRESCALER_1 + 1) * - (MUX_DIV_2 + 1)); - - /* count_value / 100 = 20859.375(HZ) (per 10 msec) */ - count_value = count_value / 100; - } + /* count_value = 2085937.5(HZ) (per 1 sec)*/ + count_value = get_pwm_clk() / ((PRESCALER_1 + 1) * + (MUX_DIV_2 + 1)); + + /* count_value / 100 = 20859.375(HZ) (per 10 msec) */ + count_value = count_value / 100; /* set count value */ writel(count_value, &timer->tcntb4); @@ -114,8 +111,11 @@ void set_timer(unsigned long t) /* delay x useconds */ void __udelay(unsigned long usec) { + struct s5p_timer *const timer = s5p_get_base_timer(); unsigned long tmo, tmp; + count_value = readl(&timer->tcntb4); + if (usec >= 1000) { /* * if "big" number, spread normalization |