config.txt

# Kernel
kernel=zImage
#initramfs ramdisk.img 0x01f00000

# Audio
dtparam=audio=on

# Camera
#disable_camera_led=1
#gpu_mem=128
start_x=1

# Display
hdmi_force_hotplug=1
hdmi_drive=2
hdmi_group=1
hdmi_mode=4
disable_overscan=1

# Graphics acceleration
#dtoverlay=vc4-fkms-v3d,cma-256
dtoverlay=vc4-kms-v3d,cma-256
mask_gpu_interrupt0=0x400
avoid_warnings=2
gpu_mem=16

# I2C
dtparam=i2c_arm=on

# Keys
#dtoverlay=gpio-key,gpio=21,keycode=116,label="POWER"

# RPI display/touchscreen
dtoverlay=i2c-rtc,ds3231
dtoverlay=rpi-backlight
dtoverlay=rpi-ft5406

# Serial console
enable_uart=1

# SPI
dtparam=spi=on