Interesting changes since the last release:-
- Optimize SDRAM timings for Pi5 8GB
- Compatibility improvements for booting from USB 2.0 SD card adapters
- Drive nEXTRST on CM5 for CM4IO compatibility.
- Preliminary support for CM5 Lite
- Added enable_rp1_uart=1 option to enable the RP1 UART for bare metal / earlycon support on GPIO 14/15 - use with pciex4_reset=0