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Diffstat (limited to 'arch/arm/mach-omap2/timer.c')
-rw-r--r--arch/arm/mach-omap2/timer.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 538e7cda5eea..3ca81e0ada5e 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -55,6 +55,7 @@
#include "soc.h"
#include "common.h"
#include "powerdomain.h"
+#include "omap-secure.h"
#define REALTIME_COUNTER_BASE 0x48243200
#define INCREMENTER_NUMERATOR_OFFSET 0x10
@@ -66,6 +67,15 @@
static struct omap_dm_timer clkev;
static struct clock_event_device clockevent_gpt;
+#ifdef CONFIG_SOC_HAS_REALTIME_COUNTER
+static unsigned long arch_timer_freq;
+
+void set_cntfreq(void)
+{
+ omap_smc1(OMAP5_DRA7_MON_SET_CNTFRQ_INDEX, arch_timer_freq);
+}
+#endif
+
static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &clockevent_gpt;
@@ -515,6 +525,10 @@ static void __init realtime_counter_init(void)
num = 8;
den = 25;
break;
+ case 20000000:
+ num = 192;
+ den = 625;
+ break;
case 2600000:
num = 384;
den = 1625;
@@ -542,6 +556,9 @@ static void __init realtime_counter_init(void)
reg |= den;
__raw_writel(reg, base + INCREMENTER_DENUMERATOR_RELOAD_OFFSET);
+ arch_timer_freq = (rate / den) * num;
+ set_cntfreq();
+
iounmap(base);
}
#else