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# Get more options/information on http://elinux.org/RPiconfig
# or on https://www.raspberrypi.org/documentation/configuration/config-txt.md
#
# !!!!! This file will get overwritten by updates. Please use !!!!!
# !!!!! extraconfig.txt if you want to set additional !!!!!
# !!!!! configuration options or add dt overlays. !!!!!
# Our kernels are located on a Linux partition. Chainload U-Boot to load them.
kernel=u-boot.bin
# Use 32 MB for GPU for all RPis (Min 16 - Max 192 MB)
# We don't need that much memory reserved for it, because we drive most hardware
# from Linux, not the VPU OS
gpu_mem=32
# Turbo mode: 0 = enable dynamic freq/voltage - 1 = always max
force_turbo=0
# Start in turbo mode for 30 seconds or until cpufreq sets a frequency
initial_turbo=30
# DO NOT overvoltage manually to not void warranty!
over_voltage=0
# Fix mini UART input frequency, and setup/enable up the UART.
enable_uart=1
# Disable warning overlays as they don't work well together with linux's graphical output
avoid_warnings=1
# This overlay fixes divergences between the RPi device tree and what
# upstream provides
dtoverlay=upstream
# overscan is only needed on old TV sets and if analog gear is in the chain (e.g. DPI)
disable_overscan=1
# u-boot expects RPi's UART to have a compatible string not supported anymore in
# linux upstream, while this is fixed, make sure the name shows up in the
# device-tree. This is only needed for RPi, RPi2 and RPi0, but applied
# generally so as to avoid complexity.
dtoverlay=uboot-bcm2835-pl011
[pi1]
# Max ARM freq (default 700 MHz)
arm_freq=840
# Max core (GPU) freq (default 250 MHz)
core_freq=375
# SDRAM freq (default 400)
sdram_freq=400
[pi3]
# These are not applied automatically? Needed to use respective upstream drivers.
dtoverlay=vc4-kms-v3d,cma-default
dtoverlay=dwc2
[pi4]
dtoverlay=disable-vc4
[all]
# Allow u-boot to set arm_control
include ubootconfig.txt
# Allow user overrides of config options
include extraconfig.txt
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