Cortex-A9 , get CPU frequency , bare metal

Hi,

I wrote a bare metal app running on Arria V evaluation board HPS (ARM Cortex-A9 CPUs) and I wish to verify the CPU frequency.

I thought I could read the CNTFRQ register value, but as Martin Weidmann explained me here:

 https://community.arm.com/support-forums/f/architectures-and-processors-forum/54325/reading-cortex-a9-cntfrq-register-using-arm-compiler-5-inline-assembly ,  

the Cortex-A9 doesn't have this register.

Maybe you can help me with how I can get this value on this CPU?

Thanks