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| author | Tejun Heo <tj@kernel.org> | 2010-02-02 14:38:15 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-02-02 14:38:15 +0900 |
| commit | ab386128f20c44c458a90039ab1bdc265ac474c9 (patch) | |
| tree | 2ad188744922b1bb951fd10ff50dc04c83acce22 /arch/arm/plat-omap/dmtimer.c | |
| parent | dbfc196a3cc1a2514ad0737a82f764de23bd65e6 (diff) | |
| parent | ab658321f32770b903a4426e2a6fae0392757755 (diff) | |
Merge branch 'master' into percpu
Diffstat (limited to 'arch/arm/plat-omap/dmtimer.c')
| -rw-r--r-- | arch/arm/plat-omap/dmtimer.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index 64f407ee0f4e..08ccf8922520 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -551,6 +551,19 @@ void omap_dm_timer_stop(struct omap_dm_timer *timer) if (l & OMAP_TIMER_CTRL_ST) { l &= ~0x1; omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); +#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \ + defined(CONFIG_ARCH_OMAP4) + /* Readback to make sure write has completed */ + omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); + /* + * Wait for functional clock period x 3.5 to make sure that + * timer is stopped + */ + udelay(3500000 / clk_get_rate(timer->fclk) + 1); + /* Ack possibly pending interrupt */ + omap_dm_timer_write_reg(timer, OMAP_TIMER_STAT_REG, + OMAP_TIMER_INT_OVERFLOW); +#endif } } EXPORT_SYMBOL_GPL(omap_dm_timer_stop); |