On 10/20/2014 04:01 AM, Denis Laroche wrote:
Hi all, I'm running linux-yocto 3.14 on a BeagleBone Black. I built cpufrequtils from meta-oe and set the kernel options to activate CPU frequency scaling, with no success. /proc/config.gz shows that the kernel config options are set, but there's no /sys/devices/system/cpu/cpu0/cpufreq directory. I know frequency scaling is supported on the CPU because it works when I boot from the stock Debian kernel. Would someone have a suggestion?
Though I'm mostly using the linux-ti-staging kernel from meta-ti on BBB, I believe the following in a fragment via "kconf hardware omapcpufreq.cfg" should work:
CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_STAT=y CONFIG_CPU_FREQ_STAT_DETAILS=y CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=m CONFIG_CPU_FREQ_GOV_USERSPACE=m CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m CONFIG_GENERIC_CPUFREQ_CPU0=y CONFIG_VOLTAGE_DOMAIN_OMAP=y CONFIG_CPU_THERMAL=y CONFIG_TI_THERMAL=y CONFIG_TI_SOC_THERMAL=y CONFIG_THERMAL=y CONFIG_THERMAL_HWMON=y CONFIG_THERMAL_OF=y CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y CONFIG_THERMAL_GOV_FAIR_SHARE=y CONFIG_THERMAL_GOV_STEP_WISE=y CONFIG_THERMAL_GOV_USER_SPACE=y
Thanks in advance, -- D. Laroche
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