ENGR00214736 [MX6SL]: Enable BUSFREQ at boot

Busfreq should be enabled at boot by default on i.MX6SL.

Signed-off-by: Nancy Chen <Nancy.Chen@freescale.com>

diff --git a/arch/arm/mach-mx6/bus_freq.c b/arch/arm/mach-mx6/bus_freq.c
index 37aec11d0133a9cbe9549c433418144ff953c979..85f23c75d2865a26f2c47c9deff2963d92fa00ca 100644 (file)
--- a/arch/arm/mach-mx6/bus_freq.c
+++ b/arch/arm/mach-mx6/bus_freq.c
@@ -568,6 +568,19 @@ static int __init busfreq_init(void)
        }
 
        printk(KERN_INFO "Bus freq driver module loaded\n");
+
+       if (cpu_is_mx6sl()) {
+               /* Enable busfreq by default. */
+               bus_freq_scaling_is_active = 1;
+               set_high_bus_freq(0);
+               /* Make sure system can enter low bus mode if it should be in
+               low bus mode */
+               if (low_freq_bus_used() && !low_bus_freq_mode)
+                       set_low_bus_freq();
+
+               printk(KERN_INFO "Bus freq driver Enabled\n");
+       }
+
        return 0;
 }