talos-rpi5/config/config.txt
Mathias Beaulieu-Duncan a9cc56e315
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Fix PCIe Gen 3: move dtparam into [pi5] section of config.txt
The dtparam=pciex1_gen=3 was being appended after the [all] section,
but RPi firmware requires PCIe dtparams in the [pi5] section.
Switch from configTxtAppend to full configTxt replacement to control
section ordering. Also add dtparam=pciex1 to explicitly enable the
external PCIe link.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-16 18:45:05 -05:00

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# See https://www.raspberrypi.com/documentation/computers/configuration.html
# Reduce GPU memory to give more to CPU.
gpu_mem=32
# Enable maximum compatibility on both HDMI ports;
# only the one closest to the power/USB-C port will work in practice.
hdmi_safe:0=1
hdmi_safe:1=1
# Load U-Boot.
kernel=u-boot.bin
# Forces the kernel loading system to assume a 64-bit kernel.
arm_64bit=1
# Run as fast as firmware / board allows.
arm_boost=1
# Enable the primary/console UART (globally).
enable_uart=1
# Disable UART on Pi5 to avoid U-Boot compatibility issue.
# The debug UART (ttyAMA10) is always active regardless of this setting.
[pi5]
enable_uart=0
# Enable PCIe and force Gen 3 for NVMe (~800 MB/s vs ~400 MB/s Gen 2)
dtparam=pciex1
dtparam=pciex1_gen=3
[all]
# Disable Bluetooth.
dtoverlay=disable-bt
# Disable Wireless Lan.
dtoverlay=disable-wifi
# CM5 Overclock — 2.6GHz stable on Compute Blade with heatsink
arm_freq=2600
over_voltage_delta=50000
arm_boost=1