On Mon, 2006-09-25 at 13:19 +0100, Roger Leigh wrote: > Hi folks, > > With current 2.6.17 and 2.8.16 Debian kernels, the following cpufreq > modules are available: > > $ find /lib/modules/$(uname -r) -name 'cpufreq*' > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq/cpufreq_stats.ko > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq/cpufreq_userspace.ko > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq/cpufreq_ondemand.ko > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq/cpufreq_conservative.ko > /lib/modules/2.6.18-1-powerpc/kernel/drivers/cpufreq/cpufreq_powersave.ko > > However, loading any or all of these modules does not enable frequency > scaling. You don't get anything under, e.g. > > /sys/devices/system/cpu/cpu0/ > > or under /proc. > > What else is needed to get CPU frequency scaling to work? On other > platforms, there are additional modules under kernel/arch/<arch>, but > this is not the case for powerpc. > > The system in question is a Mac Mini (7447A). >
On my powerbook 5,6, 2.6.18-rc6: [EMAIL PROTECTED]: zgrep -i cpu_freq /proc/config.gz [~] CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y # CONFIG_CPU_FREQ_DEBUG is not set CONFIG_CPU_FREQ_STAT=y CONFIG_CPU_FREQ_STAT_DETAILS=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=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 CONFIG_CPU_FREQ_PMAC=y [EMAIL PROTECTED]: ls /sys/devices/system/cpu/cpu0/cpufreq [~] total 0 -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 affected_cpus -r-------- 1 root root 4.0K 2006-09-25 14:25 cpuinfo_cur_freq -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 cpuinfo_max_freq -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 cpuinfo_min_freq -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_available_frequencies -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_available_governors -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_cur_freq -r--r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_driver -rw-r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_governor -rw-r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_max_freq -rw-r--r-- 1 root root 4.0K 2006-09-25 14:25 scaling_min_freq -rw-r--r-- 1 root root 4.0K 2006-09-25 14:19 scaling_setspeed drwxr-xr-x 2 root root 0 1904-01-01 22:56 stats [EMAIL PROTECTED]: cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors conservative ondemand powersave userspace performance [EMAIL PROTECTED]: cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies 1499999 749999 [EMAIL PROTECTED]: sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 749999 Maybe the CPU in the mac mini doesn't support frequency scaling ? -- Yves-Alexis -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
