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imx233: always boost in bootloader

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Many imx233 targets boot in a very low performance mode, typically cpu and
dram at 24MHz. This results in very slow boots and very unstable USB
bootloader mode. Since cpu frequency scaling is disabled in bootloader in
rockbox, always make the frequency scaling code available and boost at boot
time.

Change-Id: Ie96623c00f7c4cd9a377b84dcb14b772558cfa4d
This commit is contained in:
Amaury Pouly 2013-09-25 14:12:48 +02:00
parent 7e03dbbf94
commit 2f5f2ba91d
3 changed files with 14 additions and 2 deletions
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9
firmware/target/arm/imx233/system-imx233.c
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@ -192,7 +192,6 @@ void imx233_digctl_set_arm_cache_timings(unsigned timings)
#endif
}
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
struct cpufreq_profile_t
{
/* key */
@ -219,7 +218,7 @@ static struct cpufreq_profile_t cpu_profiles[] =
#define NR_CPU_PROFILES ((int)(sizeof(cpu_profiles)/sizeof(cpu_profiles[0])))
void set_cpu_frequency(long frequency)
void imx233_set_cpu_frequency(long frequency)
{
/* don't change the frequency if it is useless (changes are expensive) */
if(cpu_frequency == frequency)
@ -277,6 +276,12 @@ void set_cpu_frequency(long frequency)
/* update frequency */
cpu_frequency = frequency;
}
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
void set_cpu_frequency(long frequency)
{
return imx233_set_cpu_frequency(frequency);
}
#endif
void imx233_enable_usb_controller(bool enable)