Another way to do this is to configure kernel with CPU_FREQ on and with all frequency governors disabled except the performance one, or if you prefer with all governors enabled and performance one set as default governor (instead on-demand). Kernel will boot with default frequency and will change it to the maximum only one time during boot process, when cpufreq driver will be loaded.
On Mon, 2017-02-27 at 11:38 -0800, Steve B wrote: > In my application, turning CPU_FREQ off defaulted the CPU to a frequency > that we didn't want (we wanted 100% but it for some reason set us to a > lower one). The other problem is that in some cases our application would > intermittently freak out and lock things up if the frequency changed in the > background. > > What I did was leave the frequency scaling on, and then I went into the > device tree and removed all of the options except the one we wanted. > Depending on how your OS distribution is set up you may be able to do the > same! > > Steve > > > On Fri, Feb 17, 2017 at 7:24 AM, Philippe Gerum <[email protected]> wrote: > > > On 02/17/2017 03:38 PM, [email protected] wrote: > > > Hi > > > As we are disabling CPU_FREQ system consumes as much energy as it can > > and it’s undesirable. > > > > > > Is there any method to set cpu clock freq to something other than 100%? > > > > > > Something like letting CPU_FREQ=y and setting clock freq manually by > > cpufreq utility and then re-calibrate the cobalt core. I don’t know. Just > > guessing! > > > > There is no provision for this. > > > > -- > > Philippe. > > > > _______________________________________________ > > Xenomai mailing list > > [email protected] > > https://xenomai.org/mailman/listinfo/xenomai > > > _______________________________________________ > Xenomai mailing list > [email protected] > https://xenomai.org/mailman/listinfo/xenomai _______________________________________________ Xenomai mailing list [email protected] https://xenomai.org/mailman/listinfo/xenomai
