diff options
| author | Jingchang Lu <b35083@freescale.com> | 2012-08-07 15:14:15 +0800 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2012-09-12 16:50:04 -0400 |
| commit | 0403e7a68819f629b9a9cc1fd32de8ae01494924 (patch) | |
| tree | 5772b50b772c43d644c29032c1d7a41a58d2665f | |
| parent | 823f71fa53d6c73fae9eca9a1199807f742d51ce (diff) | |
ENGR00219461:Fix high resolution timer support Faraday
Signed-off-by: Jingchang Lu <b35083@freescale.com>
| -rw-r--r-- | arch/arm/plat-mxc/pit.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/plat-mxc/pit.c b/arch/arm/plat-mxc/pit.c index 1d13a2817bbb..ba71bda51c06 100644 --- a/arch/arm/plat-mxc/pit.c +++ b/arch/arm/plat-mxc/pit.c @@ -20,7 +20,6 @@ */ #include <asm/sched_clock.h> -static unsigned long pit_cnt; #define PITMCR 0x00 #define PITLTMR64H 0xE0 @@ -57,6 +56,7 @@ static unsigned long pit_cnt; #include <asm/mach/time.h> #include <mach/common.h> +static cycle_t pit_cnt; static struct clock_event_device clockevent_pit; static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED; @@ -105,7 +105,7 @@ static int __init pit_clocksource_init(struct clk *timer_clk) init_sched_clock(&cd, mvf_update_sched_clock, 32, c); return clocksource_mmio_init(timer_base + PITOFFSET + PITCVAL, "pit", - c, 0, 32, + c, 200, 32, pit_read_clk/*clocksource_mmio_readl_down*/); } @@ -191,8 +191,8 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id) static cycle_t pit_read_clk(struct clocksource *cs) { unsigned long flags; - u32 cycles; - u16 pcntr; + cycle_t cycles; + u32 pcntr; local_irq_save(flags); pcntr = __raw_readl(timer_base + PITOFFSET + PITCVAL); @@ -211,7 +211,7 @@ static struct irqaction pit_timer_irq = { static struct clock_event_device clockevent_pit = { .name = "pit", - .features = CLOCK_EVT_FEAT_PERIODIC, + .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, .shift = 32, .set_mode = pit_set_mode, .set_next_event = pit_set_next_event, @@ -246,6 +246,7 @@ void __init pit_timer_init(struct clk *timer_clk, void __iomem *base, int irq) */ __raw_writel(0x0, timer_base + PITMCR); + __raw_writel(0, timer_base + PITOFFSET + PITTCTRL); __raw_writel(0xffffffff, timer_base + PITOFFSET + PITLDVAL); __raw_writel(PITTCTRL_TEN, timer_base + PITOFFSET + PITTCTRL); |