diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2015-06-15 14:42:25 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-07-08 16:22:40 +0200 |
| commit | d5878e6e2289418ba870db4afa9e1805e78eb8ee (patch) | |
| tree | abb5966145a9240d470d1e799342528db9b7b299 | |
| parent | ARM: ep93xx: use non-raw accessors for timer (diff) | |
| download | linux-d5878e6e2289418ba870db4afa9e1805e78eb8ee.tar.xz linux-d5878e6e2289418ba870db4afa9e1805e78eb8ee.zip | |
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>
| -rw-r--r-- | arch/arm/mach-ep93xx/timer-ep93xx.c | 17 |
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); } |