diff options
Diffstat (limited to 'arch/nios2/kernel')
| -rw-r--r-- | arch/nios2/kernel/time.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/nios2/kernel/time.c b/arch/nios2/kernel/time.c index be186a7..9e3cc8a 100644 --- a/arch/nios2/kernel/time.c +++ b/arch/nios2/kernel/time.c @@ -19,7 +19,9 @@ #include <linux/io.h> #include <linux/slab.h> -#define ALTERA_TIMER_STATUS_REG 0 +#define ALTR_TIMER_COMPATIBLE "altr,timer-1.0" + +#define ALTERA_TIMER_STATUS_REG 0 #define ALTERA_TIMER_CONTROL_REG 4 #define ALTERA_TIMER_PERIODL_REG 8 #define ALTERA_TIMER_PERIODH_REG 12 @@ -304,7 +306,16 @@ void read_persistent_clock(struct timespec *ts) void __init time_init(void) { + struct device_node *np; + int count = 0; + + for_each_compatible_node(np, NULL, ALTR_TIMER_COMPATIBLE) + count++; + + if (count < 2) + panic("%d timer is found, it needs 2 timers in system\n", count); + clocksource_of_init(); } -CLOCKSOURCE_OF_DECLARE(nios2_timer, "altr,timer-1.0", nios2_time_init); +CLOCKSOURCE_OF_DECLARE(nios2_timer, ALTR_TIMER_COMPATIBLE, nios2_time_init); |