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ARM: mxs: retrieve timer irq from device tree

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Rather than using the static timer irq definition, we should retrieve
timer irq from device tree for better.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Shawn Guo
2012-08-20 08:51:45 +08:00
parent 0b76c54121
commit eeca6e6040
6 changed files with 19 additions and 6 deletions
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13
arch/arm/mach-mxs/timer.c
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@@ -25,6 +25,8 @@
#include <linux/irq.h>
#include <linux/clockchips.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <asm/mach/time.h>
#include <mach/mxs.h>
@@ -244,9 +246,17 @@ static int __init mxs_clocksource_init(struct clk *timer_clk)
return 0;
}
void __init mxs_timer_init(int irq)
void __init mxs_timer_init(void)
{
struct device_node *np;
struct clk *timer_clk;
int irq;
np = of_find_compatible_node(NULL, NULL, "fsl,timrot");
if (!np) {
pr_err("%s: failed find timrot node\n", __func__);
return;
}
timer_clk = clk_get_sys("timrot", NULL);
if (IS_ERR(timer_clk)) {
@@ -295,5 +305,6 @@ void __init mxs_timer_init(int irq)
mxs_clockevent_init(timer_clk);
/* Make irqs happen */
irq = irq_of_parse_and_map(np, 0);
setup_irq(irq, &mxs_timer_irq);
}