[PATCHv2 6/8] clocksource: sun4i: Remove TIMER_SCAL variable

From: Maxime Ripard
Date: Fri Jun 28 2013 - 15:56:45 EST


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@xxxxxxxxxxxxxxxxxx>
---
drivers/clocksource/sun4i_timer.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c
index 6ef10d9..d6621c5 100644
--- a/drivers/clocksource/sun4i_timer.c
+++ b/drivers/clocksource/sun4i_timer.c
@@ -124,7 +124,6 @@ static u32 sun4i_timer_sched_read(void)

static void __init sun4i_timer_init(struct device_node *node)
{
- unsigned long rate = 0;
struct clk *clk;
int ret, irq;
u32 val;
@@ -142,9 +141,7 @@ static void __init sun4i_timer_init(struct device_node *node)
panic("Can't get timer clock");
clk_prepare_enable(clk);

- rate = clk_get_rate(clk);
-
- writel(rate / (TIMER_SCAL * HZ),
+ writel(clk_get_rate(clk) / HZ,
timer_base + TIMER_INTVAL_REG(0));

/* set clock source to HOSC, 16 pre-division */
@@ -168,8 +165,8 @@ 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, clk_get_rate(clk),
+ 0x1, 0xffffffff);

writel(~0, timer_base + TIMER_INTVAL_REG(1));
writel(TIMER_CTL_ENABLE | TIMER_CTL_AUTORELOAD | TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M),
--
1.8.3.1

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