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clocksource: sun4i: Remove TIMER_SCAL variable

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The prescaler is only used when using the internal low frequency
oscillator (at 32kHz). Since we're using the higher frequency oscillator
at 24MHz, we can just remove it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Maxime Ripard 2013-07-16 16:45:38 +02:00 committed by Daniel Lezcano
parent 96651a0732
commit c2b852f77b
1 changed files with 3 additions and 6 deletions
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9
drivers/clocksource/sun4i_timer.c
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@ -34,8 +34,6 @@
#define TIMER_INTVAL_REG(val) (0x10 * (val) + 0x14)
#define TIMER_CNTVAL_REG(val) (0x10 * (val) + 0x18)
#define TIMER_SCAL 16
static void __iomem *timer_base;
/*
@ -168,8 +166,7 @@ static void __init sun4i_timer_init(struct device_node *node)
clocksource_mmio_init(timer_base + TIMER_CNTVAL_REG(1), node->name,
rate, 300, 32, clocksource_mmio_readl_down);
writel(rate / (TIMER_SCAL * HZ),
timer_base + TIMER_INTVAL_REG(0));
writel(rate / HZ, timer_base + TIMER_INTVAL_REG(0));
/* set clock source to HOSC, 16 pre-division */
val = readl(timer_base + TIMER_CTL_REG(0));
@ -192,8 +189,8 @@ static void __init sun4i_timer_init(struct device_node *node)
sun4i_clockevent.cpumask = cpumask_of(0);
clockevents_config_and_register(&sun4i_clockevent, rate / TIMER_SCAL,
0x1, 0xff);
clockevents_config_and_register(&sun4i_clockevent, rate, 0x1,
0xffffffff);
}
CLOCKSOURCE_OF_DECLARE(sun4i, "allwinner,sun4i-timer",
sun4i_timer_init);