How to change the timer frequency of A53 core in imx8qm board ?

[zfreeman2321]

How to change the timer frequency of A53 core in imx8qm board ? 

And where I can see zhe min ~ max frequency value supported ?

thank you 

[Zhiming_Liu]

Hi @zfreeman2321 

I don't sure if you want to know armv8 timer ,which it's source code is located in drivers/clocksource/arm_arch_timer.c

[zfreeman2321]

I am starting Guest OSes using xen, and I want to know how to set the cpu frequency of A53 core where 'xen' runs