[ARM] 4343/1: iop13xx: automatically detect the internal bus frequency

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 6 insertions, 2 deletions

diff --git a/arch/arm/mach-iop13xx/iq81340mc.c b/arch/arm/mach-iop13xx/iq81340mc.c
index a519d707571c..1ae08cc04b48 100644
--- a/arch/arm/mach-iop13xx/iq81340mc.c
+++ b/arch/arm/mach-iop13xx/iq81340mc.c
@@ -79,7 +79,9 @@ static void __init iq81340mc_init(void)
 
 static void __init iq81340mc_timer_init(void)
 {
-        iop_init_time(400000000);
+        unsigned long bus_freq = iop13xx_core_freq() / iop13xx_xsi_bus_ratio();
+        printk(KERN_DEBUG "%s: bus frequency: %lu\n", __FUNCTION__, bus_freq);
+        iop_init_time(bus_freq);
 }
 
 static struct sys_timer iq81340mc_timer = {
diff --git a/arch/arm/mach-iop13xx/iq81340sc.c b/arch/arm/mach-iop13xx/iq81340sc.c
index 0e71fbcabe00..0f8801406f23 100644
--- a/arch/arm/mach-iop13xx/iq81340sc.c
+++ b/arch/arm/mach-iop13xx/iq81340sc.c
@@ -81,7 +81,9 @@ static void __init iq81340sc_init(void)
 
 static void __init iq81340sc_timer_init(void)
 {
-        iop_init_time(400000000);
+        unsigned long bus_freq = iop13xx_core_freq() / iop13xx_xsi_bus_ratio();
+        printk(KERN_DEBUG "%s: bus frequency: %lu\n", __FUNCTION__, bus_freq);
+        iop_init_time(bus_freq);
 }
 
 static struct sys_timer iq81340sc_timer = {