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clocksource: sun4i: Remove TIMER_SCAL variable 

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);