Hi all,
I am working on a PYNQ-Z1 board and I would like to change the processing system (PS) frequency, specifically the APU clock, from the default (~667 MHz) down to around 85 MHz.
From the PYNQ Python API I know we can adjust the PL clocks (FCLK0..3), this works for the PL, but it does not affect the PS CPU clock.
The APU frequency is fixed by the FSBL/BOOT.BIN at boot time? Can I change it with the generated bitstream on Vivado?
Could someone confirm the correct procedure for running the CPU at a different clock (e.g. 85 MHz)?
Thanks in advance!