Commit a8955cc3 authored by Ley Foon Tan's avatar Ley Foon Tan

nios2: check number of timer instances

Display error message if number of timers is less than 2.
Signed-off-by: default avatarLey Foon Tan <lftan@altera.com>
parent b953c0d2
......@@ -18,7 +18,9 @@
#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
......@@ -302,7 +304,16 @@ 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);
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