On 11/19/2013 11:10 AM, Viresh Kumar wrote: > On 19 November 2013 21:18, Nishanth Menon <nm@xxxxxx> wrote: >> is that true for userspace governor >> (CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE)? >> /sys/devices/system/cpu/cpu0/cpufreq $ cat scaling_available_frequencies >> 500000 1000000 1500000 >> >> /sys/devices/system/cpu/cpu0/cpufreq $ cat scaling_cur_freq >> 1100000 > > No, but userspace governor must take care of this stuff as it want's > to change freq from userspace.. > Right, the point is that CPUFREQ_GOV_LIMITS wont help in the case when it is within min-max bound.. the first transition will help bring it to a sane value - that I agree. >> OMAP5-UEVM will remain at this frequency for a long period of time >> with AVS voltage(Adaptive Voltage Scaling technique used in OMAP to >> optimize operational voltage) that was meant for 1GHz! that is >> definitely not stable if there is no further transition to a valid >> frequency. > > I understand that point, but will this stay for a long time at that freq? > Why aren't governors coming into picture here? we depend on the first transition to take us to a sane configuration - but we cannot predict when and if it will happen. -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
