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>

diff --git a/arch/arm/mach-ep93xx/timer-ep93xx.c b/arch/arm/mach-ep93xx/timer-ep93xx.c
index 95d54ec769f69fb832d948f0d92f42e43769c417..9edaa754b6893a2fdf9faffbfd8ccf885f32d098 100644 (file)
--- 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);
 }