config.txt

# U-Boot used to need this to work, regardless of whether UART is actually used or not.
# TODO: check when/if this can be removed.
enable_uart=1

# Prevent the firmware from smashing the framebuffer setup done by the mainline kernel
# when attempting to show low-voltage or overtemperature warnings.
avoid_warnings=1
# Boot in 64-bit mode.
arm_64bit=1
kernel=kernel.img
initramfs initrd followkernel
gpu_mem=192

dtoverlay=hyperpixel4
enable_dpi_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
dpi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 32000000 6