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[ARM] 3940/1: don't reset PXA2xx clock counter 

Don't reset OSCR to zero as this prevents us from having a contiguous
time source. The value returned by sched_clock() is reset to zero in the
middle of the boot process otherwise, making CONFIG_PRINTK_TIME rather
messed up.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nicolas Pitre 2006-11-20 22:19:29 +01:00 committed by Russell King
parent bf46878c4e
commit 46ec0ce8ce
1 changed files with 4 additions and 3 deletions
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7
arch/arm/mach-pxa/time.c
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@ -124,6 +124,7 @@ static struct irqaction pxa_timer_irq = {
static void __init pxa_timer_init(void)
{
struct timespec tv;
unsigned long flags;
set_rtc = pxa_set_rtc;
@ -132,12 +133,12 @@ static void __init pxa_timer_init(void)
do_settimeofday(&tv);
OIER = 0; /* disable any timer interrupts */
OSCR = LATCH*2; /* push OSCR out of the way */
OSMR0 = LATCH; /* set initial match */
OSSR = 0xf; /* clear status on all timers */
setup_irq(IRQ_OST0, &pxa_timer_irq);
local_irq_save(flags);
OIER = OIER_E0; /* enable match on timer 0 to cause interrupts */
OSCR = 0; /* initialize free-running timer */
OSMR0 = OSCR + LATCH; /* set initial match */
local_irq_restore(flags);
}
#ifdef CONFIG_NO_IDLE_HZ