# For more configuration options and information see: http://rpf.io/configtxt
# Additional overlays and parameters are documented in: /boot/overlays/README
# NB: Some settings may impact device functionality and performance!
#
# @SARPIURL@ - 17 March 2026 - Raspberry Pi 4 config.txt

# Arm 64-bit mode [ 0 = 32-bit | 1 = 64-bit ]
arm_64bit=0

# Allocate amount of GPU video RAM (MB) [min: 16MB]
#gpu_mem=128

# Set CPU clock speed (MHz) for overclocking, etc.
#arm_freq=1500
#arm_freq_min=600

# Load a specific kernel
#kernel=kernel7
#kernel=kernel7l

# Enable optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Enable [I2C] DS3231 real time clock [RTC]
#dtoverlay=i2c-rtc,ds3231 

# Enable [SPI] DS3234 real time clock [RTC]
#dtoverlay=spi-rtc,ds3234

# Automatically load initramfs files, if found
#auto_initramfs=1

# Disable compensation for displays with overscan
disable_overscan=1

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

# Automatically load overlays for detected cameras
camera_auto_detect=1

# Automatically load overlays for detected DSI displays
display_auto_detect=1

# Enable DRM VC4 V3D driver
dtoverlay=vc4-kms-v3d
max_framebuffers=2

# Don't have the firmware create an initial video= setting in cmdline.txt.
# Use the kernel's default instead.
#disable_fw_kms_setup=1

# Enable ttyS0 (UART1)
#enable_uart=1

# Disable on-board Bluetooth
#dtoverlay=disable-bt

# Disable on-board wireless
#dtoverlay=disable-wifi

# Enable the PWR LED 'heartbeat' pulse
#dtparam=pwr_led_trigger=heartbeat

# Enable the ACT LED 'heartbeat' pulse
#dtparam=act_led_trigger=heartbeat

# Run as fast as firmware / board allows
arm_boost=1

[pi5]
# Enable Pi 5 PCIe external connector
#dtparam=pciex1
#dtparam=nvme

# Enable Pi 5 experimental PCIe Gen 3.0 mode
#dtparam=pciex1_gen=3
# Enable Pi 5 PCIe Gen 1.0 mode
#dtparam=pciex1_gen=1

# Disable Pi 5 onboard real time clock [RTC]
#dtparam=rtc=off

[cm4]
# Enable host mode on the 2711 built-in XHCI USB controller.
# This line should be removed if the legacy DWC2 controller is required
# (e.g. for USB device mode) or if USB support is not required.
otg_mode=1

[pi4]
# Raspberry Pi 4 specific configuration settings

[all]

# load the initramfs (SARPi4 installer)
initramfs initramfs.xz followkernel

