AnsweredAssumed Answered

Not clear if mx53 linux DVFS enabled or not

Question asked by Bruno De Paoli on Jun 10, 2015
Latest reply on Jun 15, 2015 by igorpadykov

I'm investigating DVFS on an IMX53 based platform running Linux. We are using the Freescale Android 10.2 BSP

 

Both frequency and voltage scaling appear to be enabled - as shown below:

 

cat /sys/devices/platform/mxc_dvfs_core.0/enable

DVFS is enabled

 

However when I look at the min and max frequencies I see the following

cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

800000

cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq

800000

 

This suggests that only one frequency is used and so no scaling is taking place.

Is this correct? If so how can I change this?

 

Thanks,

Bruno

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