# Remove delay and use cutdown start_cd.elf/start4cd.elf for slightly quicker boot
boot_delay=0
disable_splash=1
force_eeprom_read=0
gpu_mem=16
disable_overscan=1

# Ensure stable I2C baud rate by locking the core clock
core_freq=250
core_freq_min=250

# Uncomment the following line if your HDMI audio extractor isn't outputting any sound.
# This forces HDMI signalling in case your device is detected as a DVI device.
#hdmi_drive=2

# Uncomment the following line to disable undervoltage/temperature warnings and throttling.
# WARNING: Possible instability; use at your own risk! Use a heatsink!
#avoid_warnings=2

[pi02]
arm_64bit=1
kernel=kernel8.img

# Uncomment the following to overclock the Pi Zero 2 W to match the performance of the Pi 3B
#arm_freq=1200
#over_voltage=2

[pi3]
arm_64bit=1
kernel=kernel8.img

[pi4]
arm_64bit=1
armstub=armstub8-rpi4.bin
kernel=kernel8-rpi4.img

# Optimized frequency settings for lower energy use/temperature on Pi 4
arm_freq=600
arm_freq_min=100
gpu_freq=100
over_voltage=-16
over_voltage_min=-16
