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>

diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c
index dd78b63f3a24a3466dff950fb3d0830aa27e47ac..3217adc7457c8d3fd302797ad3e4b6ee590e0faa 100644 (file)
--- a/drivers/clocksource/sun4i_timer.c
+++ b/drivers/clocksource/sun4i_timer.c
@@ -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);