diff options
Diffstat (limited to 'arch/arm/mach-footbridge/dc21285-timer.c')
-rw-r--r-- | arch/arm/mach-footbridge/dc21285-timer.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c index 9ee78f7b499..785e4199f9c 100644 --- a/arch/arm/mach-footbridge/dc21285-timer.c +++ b/arch/arm/mach-footbridge/dc21285-timer.c @@ -9,6 +9,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/sched_clock.h> #include <asm/irq.h> @@ -104,3 +105,19 @@ void __init footbridge_timer_init(void) ce->cpumask = cpumask_of(smp_processor_id()); clockevents_config_and_register(ce, mem_fclk_21285, 0x4, 0xffffff); } + +static u32 notrace footbridge_read_sched_clock(void) +{ + return ~*CSR_TIMER3_VALUE; +} + +void __init footbridge_sched_clock(void) +{ + unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16); + + *CSR_TIMER3_LOAD = 0; + *CSR_TIMER3_CLR = 0; + *CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16; + + setup_sched_clock(footbridge_read_sched_clock, 24, rate); +} |