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ARM: 7081/1: mach-integrator: fix the clocksource

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commit bb9ea77846 upstream.

I was intrigued by the fact that the clock stood still on
the Integrator, but it wasn't strange at all, because the
timer was set up all wrong and probably has been for a
while. With this patch the clock starts ticking again:
make the timer periodic (reload), |= on the divisor bit
and load the timer before starting it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Linus Walleij
2011-09-06 08:08:13 +01:00
committed by Greg Kroah-Hartman
parent a677ecd3c4
commit 8a19c4e575
1 changed files with 3 additions and 3 deletions
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6
arch/arm/mach-integrator/integrator_ap.c
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@@ -337,15 +337,15 @@ static unsigned long timer_reload;
static void integrator_clocksource_init(u32 khz)
{
void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
u32 ctrl = TIMER_CTRL_ENABLE;
u32 ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC;
if (khz >= 1500) {
khz /= 16;
ctrl = TIMER_CTRL_DIV16;
ctrl |= TIMER_CTRL_DIV16;
}
writel(ctrl, base + TIMER_CTRL);
writel(0xffff, base + TIMER_LOAD);
writel(ctrl, base + TIMER_CTRL);
clocksource_mmio_init(base + TIMER_VALUE, "timer2",
khz * 1000, 200, 16, clocksource_mmio_readl_down);