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omap: timer: Set dmtimer used as clocksource in autoreload mode 

If CONFIG_OMAP_32K_TIMER is not selected and dmtimer is used as clocksource, the
timer stops counting once overflow occurs as it was not set in autoreload mode.
This results into timekeeping failure: for example, 'sleep 1' at the shell after
the timer counter overflow would hang.

This patch sets up autoreload when starting the clocksource timer which fixes
the above issue.

Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Hemant Pedanekar 2011-08-10 13:19:35 +00:00 committed by Tony Lindgren
parent 133e6b55b1
commit e9d0b97eef
1 changed files with 2 additions and 1 deletions
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3
arch/arm/mach-omap2/timer.c
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@ -293,7 +293,8 @@ static void __init omap2_gp_clocksource_init(int gptimer_id,
pr_info("OMAP clocksource: GPTIMER%d at %lu Hz\n",
gptimer_id, clksrc.rate);
__omap_dm_timer_load_start(clksrc.io_base, OMAP_TIMER_CTRL_ST, 0, 1);
__omap_dm_timer_load_start(clksrc.io_base,
OMAP_TIMER_CTRL_ST | OMAP_TIMER_CTRL_AR, 0, 1);
init_sched_clock(&cd, dmtimer_update_sched_clock, 32, clksrc.rate);
if (clocksource_register_hz(&clocksource_gpt, clksrc.rate))