diff options
| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2013-05-15 12:12:33 +0200 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2013-05-15 12:37:45 +0200 |
| commit | b7a8ca5173ef9aa55fa039d7c216426ff0b25a12 (patch) | |
| tree | 41010eebef7f8a1727af490561ced96205fdde5c /arch/arm/mach-at91/at91rm9200_time.c | |
| parent | 3f81127293284da449942a0144b9747c5db1e523 (diff) | |
ARM: at91: rm9200 fix time support
since commit 838a2ae80a6ab52139fb1bf0a93ea8c5eff94488
Author: Shawn Guo <shawn.guo@linaro.org>
Date: Sat Jan 12 11:50:05 2013 +0000
ARM: use clockevents_config_and_register() where possible
The timer is wrongly configured and result in a nice crash
so revert it on rm9200 timer.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org> # 3.8+
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/at91rm9200_time.c')
| -rw-r--r-- | arch/arm/mach-at91/at91rm9200_time.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index 2acdff4c1dfe..180b3024bec3 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -174,6 +174,7 @@ clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev) static struct clock_event_device clkevt = { .name = "at91_tick", .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + .shift = 32, .rating = 150, .set_next_event = clkevt32k_next_event, .set_mode = clkevt32k_mode, @@ -264,9 +265,11 @@ void __init at91rm9200_timer_init(void) at91_st_write(AT91_ST_RTMR, 1); /* Setup timer clockevent, with minimum of two ticks (important!!) */ + clkevt.mult = div_sc(AT91_SLOW_CLOCK, NSEC_PER_SEC, clkevt.shift); + clkevt.max_delta_ns = clockevent_delta2ns(AT91_ST_ALMV, &clkevt); + clkevt.min_delta_ns = clockevent_delta2ns(2, &clkevt) + 1; clkevt.cpumask = cpumask_of(0); - clockevents_config_and_register(&clkevt, AT91_SLOW_CLOCK, - 2, AT91_ST_ALMV); + clockevents_register_device(&clkevt); /* register clocksource */ clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK); |