linux-linaro-2.6.39 does not have DVFS Framework itself. So cpufreq is not expected to work on 2.6.39 linaro kernel.
I applied this patch against 2.6.38 linaro kernel and I do see that l3 clock is properly scaling when I change mpu frequency via cpufreq sysfs entries. Note that bogomips does not show MPU Rate properly because of an issue in cpufreq non SMP plafroms with SMP Enabled in menuconfig. But if you read the actual clock rate (using below sysfs entry), you see that MPU clock is scaling. mount -t debugfs debugfs /debug cat /debug/clock/virt_26m_ck/osc_sys_ck/sys_ck/dpll1_ck/dpll1_x2_ck/dpll1_x2m2 _ck/mpu_ck/arm_fck/rate -- You received this bug notification because you are a member of Linaro Release Team, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/784176 Title: CPU_FREQ support is broken for OMAP 3 and OMAP 4 Status in Linaro Linux: Confirmed Status in “linux-linaro-omap” package in Ubuntu: Confirmed Status in “linux-ti-omap4” package in Ubuntu: Confirmed Bug description: Current both Nicolas and Andy's kernel tree (2.6.38) is lacking proper support for CPU_FREQ. On OMAP 4 it tries to change the frequencies for the first CPU, and on OMAP 3 is basically freezes when calling cpufreq-info, besides not having a proper frequency scaling. The workaround now for the linux-linaro-omap kernel is to disable CPU_FREQ, so this bug is basically to track why it's currently disabled. To manage notifications about this bug go to: https://bugs.launchpad.net/linux-linaro/+bug/784176/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~linaro-release Post to : [email protected] Unsubscribe : https://launchpad.net/~linaro-release More help : https://help.launchpad.net/ListHelp
