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authorLinus Walleij <linus.walleij@linaro.org>2015-06-15 15:42:25 +0300
committerLinus Walleij <linus.walleij@linaro.org>2015-07-08 17:22:40 +0300
commitd5878e6e2289418ba870db4afa9e1805e78eb8ee (patch)
treeabb5966145a9240d470d1e799342528db9b7b299 /arch/arm/mach-ep93xx
parentd118d977c19ef778c597473e1c4e53703681054a (diff)
downloadlinux-d5878e6e2289418ba870db4afa9e1805e78eb8ee.tar.xz
ARM: ep93xx: switch clockevent to timer 3
If we switch clock events to timer 3 we will have more bits to use and can sleep longer when using NO_HZ. Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ep93xx')
-rw-r--r--arch/arm/mach-ep93xx/timer-ep93xx.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/arm/mach-ep93xx/timer-ep93xx.c b/arch/arm/mach-ep93xx/timer-ep93xx.c
index 95d54ec769f6..9edaa754b689 100644
--- a/arch/arm/mach-ep93xx/timer-ep93xx.c
+++ b/arch/arm/mach-ep93xx/timer-ep93xx.c
@@ -77,12 +77,12 @@ static int ep93xx_clkevt_set_next_event(unsigned long next,
EP93XX_TIMER123_CONTROL_CLKSEL;
/* Clear timer */
- writel(tmode, EP93XX_TIMER1_CONTROL);
+ writel(tmode, EP93XX_TIMER3_CONTROL);
/* Set next event */
- writel(next, EP93XX_TIMER1_LOAD);
+ writel(next, EP93XX_TIMER3_LOAD);
writel(tmode | EP93XX_TIMER123_CONTROL_ENABLE,
- EP93XX_TIMER1_CONTROL);
+ EP93XX_TIMER3_CONTROL);
return 0;
}
@@ -91,7 +91,7 @@ static void ep93xx_clkevt_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
{
/* Disable timer */
- writel(0, EP93XX_TIMER1_CONTROL);
+ writel(0, EP93XX_TIMER3_CONTROL);
}
static struct clock_event_device ep93xx_clockevent = {
@@ -107,7 +107,7 @@ static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id)
struct clock_event_device *evt = dev_id;
/* Writing any value clears the timer interrupt */
- writel(1, EP93XX_TIMER1_CLEAR);
+ writel(1, EP93XX_TIMER3_CLEAR);
evt->event_handler(evt);
@@ -132,11 +132,10 @@ void __init ep93xx_timer_init(void)
sched_clock_register(ep93xx_read_sched_clock, 40,
EP93XX_TIMER4_RATE);
- /* Set up clockevent on timer 1 */
- setup_irq(IRQ_EP93XX_TIMER1, &ep93xx_timer_irq);
- // FIXME: timer one is 16 bits 1-ffff use timer 3 1-ffffffff */
+ /* Set up clockevent on timer 3 */
+ setup_irq(IRQ_EP93XX_TIMER3, &ep93xx_timer_irq);
clockevents_config_and_register(&ep93xx_clockevent,
EP93XX_TIMER123_RATE,
1,
- 0xffffU);
+ 0xffffffffU);
}