According to the power management section of the Linux SDK processor, there must be a set of virtual files in the /sys/devices/system/cpu/cpu0/cpufreq/:
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Using this files it is possible to control processor power, but i can't see this files.
What may be reason of this?
In the "baseport.cfg" (a fragment of the _defconfig) there are such options:
# CPU Frequency scaling
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
# CPUFreq Driver Options
CONFIG_CPUFREQ_DT=y
CONFIG_ARM_BIG_LITTLE_CPUFREQ=n
CONFIG_ARM_KIRKWOOD_CPUFREQ=n
CONFIG_ARM_OMAP2PLUS_CPUFREQ=n
CONFIG_ARM_TI_CPUFREQ=y
CONFIG_QORIQ_CPUFREQ=n
