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ARM: mxs: request clock for timer

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When mxs_timer_init() does not have a timer_clk passed in, it should
try to request clock from clkdev system.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Shawn Guo 2012-04-29 00:02:37 +08:00
parent 7d81397cd9
commit 39d1367e11
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-mxs/timer.c
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@ -20,6 +20,7 @@
* MA 02110-1301, USA.
*/
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/clockchips.h>
@ -245,6 +246,14 @@ static int __init mxs_clocksource_init(struct clk *timer_clk)
void __init mxs_timer_init(struct clk *timer_clk, int irq)
{
if (!timer_clk) {
timer_clk = clk_get_sys("timrot", NULL);
if (IS_ERR(timer_clk)) {
pr_err("%s: failed to get clk\n", __func__);
return;
}
}
clk_prepare_enable(timer_clk);
/*