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pieeprom-2024-07-30: 2712: Optimized SDRAM timings for Pi5 8GB (latest)
* Optimize all-banks/per-bank refresh timings for Pi5 8GB * Improve compatibility for booting from some USB SD card readers #527 * Add enable_rp1_uart=1 to config.txt to initialise RP1 UART0 immediately prior to starting the ARMs get earlycon on 40-pin header (pins 14,15) Also requires pciex4_reset=0 in config.txt earlycon=pl011,0x1f00030000,115200n8
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firmware-2712/release-notes.md

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# Raspberry Pi5 bootloader EEPROM release notes
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## 2024-07-30: Optimized SDRAM timings for Pi5 8GB (default)
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* Optimize all-banks/per-bank refresh timings for Pi5 8GB
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* Improve compatibility for booting from some USB SD card readers
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https://github.com/raspberrypi/rpi-eeprom/issues/527
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* Add enable_rp1_uart=1 to config.txt to initialise RP1 UART0 immediately
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prior to starting the ARMs get earlycon on 40-pin header (pins 14,15)
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Also requires pciex4_reset=0 in config.txt
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earlycon=pl011,0x1f00030000,115200n8
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## 2024-07-25: Support CM4 nEXTRST on CM5
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* Drive nEXTRST on CM5 for CM4IO compatibility.
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* Preliminary changes for CM5 Lite.

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