path: root/sys-boot/raspberrypi-firmware/files/raspberrypi-firmware-config.txt

#
# /boot/config.txt
#

# See http://elinux.org/RPi_config.txt
#
# For more options and information see 
# http://www.raspberrypi.org/documentation/configuration/config-txt.md
# Some settings may impact device functionality. See link above for details


#
# It is now possible to filter sections of this file using [pi1]/[pi2],
# [EDID=*] to filter by connected display, and [0x12345678] to filter by
# serial-number.
# 'tvservice -n' will produce output similar to 'device_name=VSC-TD2220', which
# can then be selected upon using a '[EDID=VSC-TD2220]' section - and may be
# used to select specific hdmi_group, hdmi_mode, etc. tunables.  For this to
# apply, the TV/monitor in question *must* be connected on boot, and settings
# are not hot-pluggable.
# Device serial-numbers appear in '/proc/cpuinfo'.
# Remeber to end each section with [all] to remove further filtering.  Until an
# [all] block is encountered, filters of different types stack where this makes
# sense (e.g. '[pi1]' followed by '[EDID=...]' will only apply to a given
# monitor on an RPi1, but following this with '[pi2]' repalces '[pi1]' but
# maintains the EDID filter.
#


#
# Licensed Options - up to eight licenses can be listed at once for generic
# support of multiple RPi boards from a single config.txt file.
#
#decode_MPG2=0x12345678[,...]
#decode_WVC1=0x12345678[,...]


[all]


#
# Firmware configuration options
#

# The _cd (cut-down) firmware files contain the minimal firmware required to
# operate the BCM22708/BCM2709 SoC, and require only 16MB of dedicated GPU
# memory.
# The non-prefixed standard versions also include video codecs, and require
# 32MB of GPU memory.
# The _x (extended) firmware files also contain the code necessary to drive the
# RaspiCam webcam module - but require 64MB of GPU memory.
#start_file=start_cd.elf
#fixup_file=fixup_cd.dat
#start_file=start.elf
#fixup_file=fixup.dat
#start_file=start_x.elf
#fixup_file=fixup_x.dat

[pi3]
# When using experimental start.elf and bootcode.bin files from the 'next'
# branch:
#  https://github.com/raspberrypi/firmware/raw/next/boot/start.elf
#  https://github.com/raspberrypi/firmware/raw/next/boot/bootcode.bin
# ... and having enabled the option below to allow the VideoCore OTP memory to
# be updated with the ability to act as a USB host and locate the VideoCore
# configuration and binaries and so boot from a connected USB mass-storage
# device... although by default there will be a 5-second delay unless
# a blank SD card is inserted, and any valid SD card will still be used in
# preference.
# This update can be confirmed by checking that the output of:
#  vcgencmd otp_dump | grep '^17:'
# ... is "17:3020000a".
# Please note that this option is irreversible, and once a given SoC has been
# booted with this option set then it will have no further effect.
#program_usb_boot_mode=1

# Wait for 5 seconds for USB devices, rather than 2 - useful to ensure that
# hard discs have spun-up... please note that this also cannot be un-set once
# applied.
# This can also be tested in a reversible way by attempting to boot with an SD
# card inserted containing a file named 'TIMEOUT' on the first FAT32 partition.
#program_usb_boot_timeout=1

# Some versions of the bootrom code are unable to process FAT32 partitions of
# greater than 100GB in size, so separating the VideoCore initialisation code
# from the working partition(s) is a good idea!
[all]

# Explicitly cause the extended firmware to be loaded, requires at least 128MB
# GPU memory.
#start_x=1

# Disable RaspiCam LED, for stealth recording(!)
#disable_camera_led=1

# Prevent the DSI-connected Raspberry Pi Display from pre-empting HDMI, if
# present.
#display_default_lcd=0

# Enable DSI display auto-detection on original Model A and Model B RPi1s,
# after having read the wiring requirements at
# https://www.raspberrypi.org/documentation/hardware/display/README.md
[pi1]
#ignore_lcd=0
[all]

[pi3]
# Release ARM CPU from reset in 64-bit ARMv8/AArch64 rather than 32-bit ARMv7,
# noting that this then requires a (custom-built) 64-bit kernel.
# arm_64bit=1 is equivalent to arm_control=0x200.
#arm_64bit=1
#kernel_old=1
#disable_commandline_tags=1
# Otherwise, a custom stub can be provided to setup the ARM CPU before a
# kernel is loaded, although modern firmware provides appropriate stubs
# automatically.
#armstub=armstub8.bin
# A less manual way to achieve the same thing is to use a kernel image named
# 'kernel8.img', which will then be automatically booted in 64-bit mode.
[all]

[pi2]
# Allow 1.2mA current-draw in total between over all four of the Raspberry Pi
# Model B+ and Raspberry Pi Model 2 USB ports, up from 600mA.
# When set, GPIO38 is permantently held high.
# (This was previously activated by setting 'safe_mode_gpio=4')
# N.B.: This requires a reliable high-quality power-supply rated for a current
#       of 2A or more...
#max_usb_current=1
[pi1]
# Model B+ only!
#max_usb_current=1
[all]

# Override SMSC9512/9514 MAC address:
#smsc95xx.macaddr=B8:27:EB:aa:bb:cc

# Disable dithering in the PWM audio algorithm, which may help to address
# issues with white-noise through the audio jack...
disable_audio_dither=1

# Adjust the bit-depth of analogue audio output, mostly for demonstration
# purposes.  Values below 8 will result in too low a PLL frequency, and
# therefore non-functional audio.
#pwm_sample_bits=11


#
# Device Tree configuration options
#
# Complete w.r.t. boot/overlays/README as-of
# commit bf5201e9682bf36370bc31d26b37fd4d84e1cfca.
#

# Log DT diagnostics, to be collected via 'vcdbg log msg':
#dtdebug=on

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c,i2s,spi,watchdog

#device_tree_param=audio=off
#device_tree_param=i2c1=off # i2c_arm/i2c
#device_tree_param=i2c0=off # i2c_vc
#device_tree_param=i2c_arm_baudrate=100000 # i2c_baudrate
#device_tree_param=i2c_vc_baudrate=100000
#device_tree_param=i2s=off
#device_tree_param=spi=off
#device_tree_param=random=on
#device_tree_param=sd_overclock=50
#device_tree_param=sd_force_pio=off
#device_tree_param=sd_pio_limit=1
#device_tree_param=sd_debug=off
#device_tree_param=uart0=on
#device_tree_param=uart1=off,txd1_pin=14,rxd1_pin=15 # default varies
#device_tree_param=watchdog=off
#device_tree_param=act_led_trigger=mmc # value 'heartbeat' gives a load-monitor
#device_tree_param=act_led_activelow=off
[pi1]
#device_tree_param=act_led_gpio=47 # or 16 for pre-Plus models
[pi2]
#device_tree_param=act_led_gpio=47
#device_tree_param=pwr_led_trigger=mmc # value 'heartbeat' gives a load-monitor
#device_tree_param=pwr_led_activelow=off
#device_tree_param=pwr_led_gpio=35
[pi3]
#device_tree_overlay=pi3-disable-wifi
#device_tree_overlay=pi3-disable-bt
#device_tree_overlay=pi3-miniuart-bt
#device_tree_overlay=pi3-act-led,activelow=off,gpio=47
[all]

# USB driver - dwc-otg is default except for Pi Zero, which uses dwc2
#device_tree_overlay=dwc-otg
#
# dwc2 supports modes 'host', 'peripheral', or 'otg'
#device_tree_overlay=dwc2,dr_mode=host
#device_tree_overlay=dwc2,dr_mode=peripheral
#device_tree_overlay=dwc2,dr_mode=otg,g-rx-fifo-size=?,g-np-tx-fifo-size=?,g-tx-fifo-size=?

#device_tree_overlay=uart1,txd1_pin=14,rxd1_pin=15 # tx pins 14, 32, or 40; rx pins 15,33, or 41.
#device_tree_overlay=i2c0-bcm2708,pins_0_1 # or pins_28_29, pins_44_45, pins_46_47
#device_tree_overlay=i2c1-bcm2708,sda0_pin=0,scl0_pin=1,pin_func=4 # SDA0 pin 2 (or 44); SCL0 pin 3 (or 45); pin function 4 (alt0) or 6 (alt2)
#device_tree_overlay=i2c-bcm2708

# The following overlays have been removed:
##device_tree_overlay=spi-bcm2708
##device_tree_overlay=spi-bcm2835
##device_tree_overlay=spi-dma

#device_tree_overlay=i2s-gpio28-31

#device_tree_overlay=spi-gpio35-39
#device_tree_overlay=spi0-cs,cs0_pin=8,cs1_pin=7
# Re-enable hardware CS/CE (chip select) for SPI0
#device_tree_overlay=spi0-hw-cs

# spi1 is only available on devices with a 40-pin header:
#device_tree_overlay=spi1-1cs,cs0_pin=18,cs0_spidev=okay
#device_tree_overlay=spi1-2cs,cs0_pin=18,cs1_pin=17,cs0_spidev=okay,cs1_spidev=okay
#device_tree_overlay=spi1-3cs,cs0_pin=18,cs1_pin=17,cs2_pin=16,cs0_spidev=okay,cs1_spidev=okay,cs2_spidev=okay
# Enable NXP SC16IS752 Dual UART w/SPI interface on SPI1
#device_tree_overlay=sc16is752-spi1,int_pin=24
#
# spi2 is only available on the Compute Module:
#device_tree_overlay=spi2-1cs,cs0_pin=43,cs0_spidev=okay
#device_tree_overlay=spi2-2cs,cs0_pin=43,cs1_pin=44,cs0_spidev=okay,cs1_spidev=okay
#device_tree_overlay=spi2-3cs,cs0_pin=43,cs1_pin=44,cs2_pin=45,cs0_spidev=okay,cs1_spidev=okay,cs2_spidev=okay

# MCP SPI devices require one of the spi1-* or spi2-* options above to be
# enabled if present on SPI1 or SPI2.
#device_tree_overlay=mcp23s17,s08-spi<n>-<m>-present=?,s08-spi<n>-<m>-int-gpio=?  # SPI<n>, CS#<m>
#device_tree_overlay=mcp23s17,s17-spi<n>-<m>-present=?,s17-spi<n>-<m>-int-gpio=?  # SPI<n>, CS#<m>
#device_tree_overlay=mcp3008,spi<n>-<m>-present=?,spi<n>-<m>-speed=? # SPI<n>, CS#<m>

# SD/MMC driver - choose only one
#
# For 'mmc', the overclock_50 speed must be an even integer divisor of
# core_freq, rounding down - the default is 250MHz/6 = 41.667MHz.
# Reasonable values are therefore 63 or 84 only, and 84 isn't accepted at
# core_freq=500MHz.  However, setting:
#init_emmc_clock=50000000
# ... may allow hitting 50MHz with core_freq=500MHz, as this does then form an
# integer divisor.
# For 'sdhost', the overclock_50 speed must be an integer divisor of core_freq
# - default is 250MHz/5 = 50MHz, and for core_freq=500MHz, 500MHz/10 = 50MHz.
#
# From https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=6201&p=761030:
#
# Core	mmc		sdhost
# Freq	overclock_50	overclock_50
#
# 250	63		63,84
# 275	69		55,69,92
# 300	50,75		60,75,100
# 325	55,82		55,65,82,(109)
# 350	59,88		59,70,88,(117)
# 375	63,94		54,63,75,94
# 400	67,100		58,67,80,100
# 425	54,71,(107)	54,61,71,85,(107)
# 450	57,75,(113)	57,65,75,90,(113)
# 475	60,80,(119)	53,60,68,80,95,(119)
# 500	63,84		56,63,72,84,100
#
#device_tree_overlay=mmc,overclock_50=63
#
# N.B. dtoverlay=sdhost kills Wifi on RPi3!
#device_tree_overlay=sdhost,overclock_50=84,sdio_overclock=84,force_pio=off,pio_limit=1,debug=off
#
#device_tree_overlay=sdtweak,overlock_50=84,force_pio=off,pio_limit=1,debug=off
#
# enables SDIO via GPIOs 22-27
#device_tree_overlay=sdio,overclock_50=84,sdio_overclock=84,force_pio=off,pio_limit=1,debug=off,poll_once=on,bus_width=4

# Eric Anholt's DRM VC4 drivers:
# Run DRM VC4 V3D driver on top of existing dispmanx stack:
#device_tree_overlay=vc4-fkms-v3d,[cma-64,cma-96,cma-128[,cma-192,cma-256]]
# Experimental full-stack HDMI/HVS/V3D driver:
# Running startx or booting to GUI while this overlay is in use will cause
# interesting lockups.
#device_tree_overlay=vc4-kms-v3d,[cma-64,cma-96,cma-128[,cma-192,cma-256]]

# Uncomment one of these lines to enable additional devices
#device_tree_overlay=gpio-poweroff,gpiopin=26 # ,active_low
#device_tree_overlay=smi # Uses GPIOs 2-25!
#device_tree_overlay=smi-dev
#device_tree_overlay=smi-nand
#device_tree_overlay=i2c-gpio,i2c_gpio_sda=23,i2c_gpio_scl=24,i2c_gpio_delay_us=2

# The following overlays have been removed:
##device_tree_overlay=i2s-mmap

#device_tree_overlay=dht11,gpiopin=4
#device_tree_overlay=enc28j60,int_pin=25,speed=12000000
#device_tree_overlay=enc28j60-spi2,int_pin=39,speed=12000000
#device_tree_overlay=rpi-sense
#device_tree_overlay=at86rf233,interrupt=23,reset=24,sleep=25,speed=3000000,trim=15
#device_tree_overlay=qca7000,int_pin=23,speed=12
#device_tree_overlay=i2c-mux,pca9542,pca9545,pca9548,addr=0x70
#device_tree_overlay=i2c-pwm-pca9685a,addr=0x40

# The following overlays have been removed:
##device_tree_overlay=i2c-mux-pca9548a,addr=0x70
##device_tree_overlay=bmp085_i2c-sensor

# I2C:
#device_tree_overlay=mcp23017,gpiopin=4,addr=0x20
#device_tree_overlay=sc16is750-i2c,int_pin=24,addr=0x48
#device_tree_overlay=i2c-sensor,bmp085,bmp280,si7020

# RTC:
# i2c-rtc supports abx80x, ds1307, ds1339, ds3231, mcp7940x, mcp7941x, pcf2127, pcf8523, and pcf8563 devices.
#device_tree_overlay=i2c-rtc,<device>,wakeup-source
#device_tree_overlay=i2c-rtc,ds1339,trickle-diode-type={standard,schottky},trickle-resistor-ohms=?,wakeup-source
#device_tree_overlay=spi-rtc,pcf2123
#device_tree_overlay=wittypi,led_gpio=17,led_trigger=default-on

# Pulse-per-second:
#device_tree_overlay=pps-gpio,gpiopin=18 # ,assert_falling_edge
#device_tree_overlay=pwm,pin=18,func=2,clock=? # Plus models & Pi2 support pin={12,13,18}
#device_tree_overlay=pwm-2chan,pin=18,pin2=19,func=2,func2=2,clock=?

# Dallas 1-wire:
#device_tree_overlay=w1-gpio,gpiopin=4,pullup=off
#device_tree_overlay=w1-gpio-pullup,gpiopin=4,pullup=off,extpullup=5

# DAC & ADC Audio devices & codecs:
#device_tree_overlay=allo-piano-dac-pcm512x-audio # ,24db_digital_gain
#device_tree_overlay=audremap # ,swap_lr,enable_jack # Move PWM to GPIO pins 12 & 13
#device_tree_overlay=adau7002-simple,card-name=adau7002
#device_tree_overlay=adau1977-adc
#device_tree_overlay=ads1015,addr=0x48,cha_enable,cha_cfg=4,cha_datarate=4,cha_gain=2 # chb_enable,chb_cfg=4,chb_datarate=4,chb_gain=2,chc_enable,chc_cfg=4,chc_datarate=4,chc_gain=2,chd_enable,chd_cfg=4,chd_datarate=4,chd_gain=2
#device_tree_overlay=akkordion-iqdacplus # ,24db_digital_gain
#device_tree_overlay=audioinjector-wm8731-audio
#device_tree_overlay=dionaudio-loco
#device_tree_overlay=dionaudio-loco-v2 # ,24db_digital_gain
#device_tree_overlay=hifiberry-amp
#device_tree_overlay=hifiberry-dac
#device_tree_overlay=hifiberry-dacplus # ,24db_digital_gain,slave
#device_tree_overlay=hifiberry-digi
#device_tree_overlay=hifiberry-digi-pro
#device_tree_overlay=iqaudio-dac # ,24db_digital_gain
#device_tree_overlay=iqaudio-dacplus # ,24db_digital_gain,auto_mute_amp,unmute_amp
#device_tree_overlay=iqaudio-digi-wm8804-audio # ,card_name="IQAudIODigi",dai_name="IQAudIO Digi",dai_stream_name="IQAudIO Digit HiFi"
#device_tree_overlay=justboom-dac # ,24db_digital_gain
#device_tree_overlay=justboom-digi
#device_tree_overlay=pisound
#device_tree_overlay=raspidac3
#device_tree_overlay=rpi-cirrus-wm5102
#device_tree_overlay=rpi-dac
#device_tree_overlay=rpi-proto
#device_tree_overlay=rra-digidac1-wm8741-audio

# The following overlays have been removed:
##device_tree_overlay=boomberry-dac # ,24db_digital_gain
##device_tree_overlay=boomberry-digi

# Touch Screens and Displays:
#device_tree_overlay=ads7846,cs=1,speed=2,penirq=<gpio>,penirq_pull={0,2},swapxy,xmin=0,ymin=0,xmax=4095,ymax=4095,pmin=0,pmax=65535,xohms=400
#device_tree_overlay=dpi18
#device_tree_overlay=dpi24
#device_tree_overlay=hy28a,speed=?,rotate=0,fps=?,debug=[0-7],xohms=?,resetgpio=?,ledgpio=?
#device_tree_overlay=hy28b,speed=?,rotate=0,fps=?,debug=[0-7],xohms=?,resetgpio=?,ledgpio=?
#device_tree_overlay=mz61581,speed=?,rotate=0,fps=?,txbuflen=32768,debug=[0-7],xohms=?
#device_tree_overlay=piscreen,speed=?,rotate=0,fps=?,debug=[0-7],xohms=?
#device_tree_overlay=piscreen2r,speed=?,rotate=0,fps=?,debug=[0-7],xohms=?
#device_tree_overlay=pitft22,speed=?,rotate=[0,90,180,270],fps=?,debug=[0-7]
#device_tree_overlay=pitft28-capacitive,speed=?,rotate=[0,90,180,270],fps=?,debug=[0-7],touch-sizex=240,touch-sizey=320 # ,touch-invx,touch-invy,touch-swapxy
#device_tree_overlay=pitft28-resistive,speed=?,rotate=[0,90,180,270],fps=?,debug=[0-7]
#device_tree_overlay=pitft35-resistive,speed=?,rotate=[0,90,180,270],fps=?,debug=[0-7]
#device_tree_overlay=rpi-backlight
#device_tree_overlay=rpi-display,speed=?,rotate=0,fps=?,debug=[0-7],xohms=?,swapxy
#device_tree_overlay=rpi-ft5406
#device_tree_overlay=tinylcd35,speed=?,rotate=0,fps=?,debug=[0-7],touchgpio=?,xohms=? # ,touch,rtc-pcf,rtc-ds,keypad
#device_tree_overlay=vga666 # Uses GPIOs 2-21!

# CAN controllers:
#device_tree_overlay=mcp2515-can0,oscillator=?,spimaxfrequency=?,interrupt=?
#device_tree_overlay=mcp2515-can1,oscillator=?,spimaxfrequency=?,interrupt=?

# Infrared receiver:
#device_tree_overlay=gpio-ir,gpio_pin=18,gpio_pull=down,rc-map-name=rc-rc6-mce
#device_tree_overlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=18,gpio_in_pull=down,sense=-1,softcarrier=on,invert=off,debug=off

# UART0/ttyAMA0 MIDI:
#device_tree_overlay=midi-uart0

#
# Memory Options
#

# If enabled, the following option requires an L2-disabled kernel:
#disable_l2cache=0

# Disable the dynamic adjustment of RAM refresh rate every 500ms
# A higher refresh rate is needed at higher temperatures...
#disable_pvt=0
# As of February 2016, if sdram_freq>450 on RPi2, then disable_pvt=1 and
# over_voltage_sdram_p=2 are set automatically. over_voltage_sdram_p may need
# to be increased further for sdram_freq>500.
# See https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=6201&start=1019

# GPU/CPU default memory split, minimum 16MB defulting to 64MB.
# Maximum is 192MB for 256MB machines, 448MB for 512MB machines, and 944 for
# 1GB RPi2s.
#gpu_mem=64
#gpu_mem_256=192
#gpu_mem_512=448
#gpu_mem_1024=944

# CMA Dynamic Memory Split
# Requires 'coherent_pool=6M smsc95xx.turbo_mode=N' in cmdline.txt
#cma_lwm=16
#cma_hwm=32
#
# How much memory to reserve for the GPU before CMA fully initialises
#cma_offline_start=32
#
# e.g. On a 256MB machine, with gpu_mem=160, cma_lwm=16, cma_hwm=32 means that
#      ARM always has (256-160=)96MB, GPU always has 20MB, the rest is CMA.
#      GPU's 20MB is 16MB minimum + coherent_pool (+ cma)?
# CMA is apparently officially unsupported:
#  https://github.com/raspberrypi/linux/issues/503


#
# Boot Options
#

# Prevent 'start.elf' from populating ATAGS (0x100 upwards) before launching
# kernel.
#disable_commandline_tags=0

# Provide kernel arguments directly rather than in cmdline.txt
# N.B. The firmware config.txt parser has a 79-character limit, limiting the
#      usefulness of this option...
#cmdline=dwc_otg.lpm_enable=0 console=tty0 console=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait zcache
#
# The file from which command-line arguments are read can be customised:
#cmdline cmdline.txt

# Prevent the shorting of GPIO pins 5 & 6 to load kernel_emergency.img...
# N.B.: Removed as of 20140318, but NOOBS still uses the same GPIO pins to
# launch into its own safe-mode, and they can also be shorted to reboot a
# halted RPi.
#avoid_safe_mode=0

# Kernel load-address.
#kernel_address=

# Load kernel at 0x0, and maintain HYP mode rather than dropping to SVC mode on
# RPi2 hardware.
# N.B. Requires a bootloader prepended to the kernel image, see
#      https://github.com/slp/rpi2-hyp-boot and http://blog.flexvdi.es//?p=139
# Update: The kernel is now started in HYP mode regardless, see
#         https://github.com/raspberrypi/firmware/issues/369
#kernel_old=1

#ramfsfile=
#ramfsaddr=
#
# ramfsfile & ramfsaddr in one option - note the lack of '='
#initramfs initramfs.gz 0x00a00000
#initramfs initramfs.gz followkernel
#
# Valid addresses depend on kernel size: 0x00800000 was good for 3.6-era
# kernels, whereas 3.14 is requires 0x00a00000.

# Address to load device-tree data into.
#device_tree_address=

# Specify an alternate kernel image instead of 'kernel.img'/'kernel7.img'.
#kernel=kernel/uboot.img
[pi1]
kernel=kernel/kernel.img
#initramfs kernel/initramfs.gz followkernel
[pi2]
kernel=kernel/kernel7.img
#initramfs kernel/initramfs7.gz followkernel
[pi3]
kernel=kernel/kernel7.img
#initramfs kernel/initramfs64.gz followkernel
[all]

# Boot delay, for diagnostic purposes.
# delay == 1000 * boot_delay + boot_delay_ms
#boot_delay=1
#boot_delay_ms=0

# Disable rainbow splash-screen
#disable_splash=1

# UART baud rate
#init_uart_baud=115200
#
# Default UART/EMMC clock is 3MHz/100MHz
#init_uart_clock=3000000
#init_emmc_clock=100000000 # N.B. only for 'mmc' driver, sdhost and sdio ignore


#
# Video Options
#

# It is now possible to filter using:
#[EDID=*], e.g. [EDID=VSC-TD2220] - see output of 'tvservice -n'

# Set stdv mode to PAL (as used in Europe)...
# 0 is NTSC, 1 is PAL/Japan, 3 is PAL/Brazil
#sdtv_mode=2

# ... with a 16:9 ratio (1 is 4:3, 2 is 14:9)...
#sdtv_aspect=3

# Disables colour burst on composite output. The picture will be monochrome,
# but possibly sharper...
#sdtv_disable_colourburst=1

# Enable HDMI "safe mode"
# Uncomment if you get no picture on HDMI for a default "safe" mode
# (Equivalent to hdmi_force_hotplug=1, hdmi_ignore_edid=0xa5000080,
#  config_hdmi_boost=4, hdmi_group=2, hdmi_mode=4, disable_overscan=0,
#  overscan_left=24, overscan_right=24, overscan_top=24, overscan_bottom=24)
#hdmi_safe=1

# Force HDMI on even if not detected
# Uncomment if HDMI display is not detected and composite is being output
#hdmi_force_hotplug=1

# Pretends HDMI hotplug signal is not asserted so it appears a HDMI display is
# not attached, and output goes to composite video connector
#hdmi_ignore_hotplug=0

# Enables the ignoring of EDID/display data if display is non-compliant
#hdmi_ignore_edid=0xa5000080

# Read data from edid.dat rather than from connected monitor
#hdmi_edid_file=0

# Try to match resolution and framerate, even if blanking is wrong...
#hdmi_fuzzy_match=1

# Don't sent initial active source message - avoids bringing (CEC enabled) TV
# out of standby and channel switching when rebooting.
#hdmi_ignore_cec_init=1

# Disable CEC entirely
#hdmi_ignore_cec=1

# Set the CEC name of the device, defaulting to "Raspberry Pi"
#cec_osd_name=

# Pretends all audio formats are supported by display, allowing passthrough of
# DTS/AC3 even when not reported as supported.
#hdmi_force_edid_audio=1

# Pretends no audio formats are supported by display, causing ALSA to produce
# analogue output.
#hdmi_ignore_edid_audio=1

# Pretends all CEA modes support 3D.
#hdmi_force_edid_3d=1

# Undocumented option to turn off displays after ~10 minutes of inactivity
# (rather than simply blanking the display but keeping it powered).
# N.B.: Some applications (such as omxplayer) don't prevent blanking, so this
#       is off my default.
#       See https://github.com/raspberrypi/linux/issues/487
#hdmi_blanking=1

# Uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display (possibly due to lengthy HDMI cables).
# Values 0-11, default 2 for RPi1 Models A & B, 5 for RPi1 Model B+ and later.
# Try the value below if HDMI signal issues are seen...
#config_hdmi_boost=7

# Force pixel encoding mode - should come from EDID by default
# 0 - Default (limited for CEA, full for DMT)
# 1 - RGB limited (16-235), 2 - RGB full (0-255)
# 3 - YCbCr limited (16-235), 4 - YCbCr full (0-255)
#hdmi_pixel_encoding=0

# Force the monitor to HDMI mode (rather than DMT default DVI) so that sound
# will be sent over HDMI cable
# 1 - DVI (no audio), 2 - HDMI (Audio enabled if supported and enabled)
#hdmi_drive=2

# Set monitor mode to default according to EDID(0), CEA(1), or DMT(2).
# DMT is computer monitor mode, and disables HDMI audio without hdmi_drive.
#hdmi_group=2

# Set monitor resolution to 1024x768 XGA 60Hz (HDMI_DMT_XGA_60)
#hdmi_mode=16
# Note that, due to pixel-clock limitations, the highest supported video mode
# is 1920x1200@60Hz, with reduced blanking.

# Define a custom video mode, if necessary.  This mode will be hdmi_group=2,
# hdmi_mode=87, and must still be selected as such to take effect.
#hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace> <rb>

# Uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# Uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# Uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

#framebuffer_depth=16 # bpp
# ... 8 is unreadable, 24 has corruption issues, 32 requires
# framebuffer_ignore_alpha=1 and may show wrong colours
# Disable alpha channel for 32bit modes
#framebuffer_ignore_alpha=1

# Uncomment to hardware-rotate video output.
# 0 - Normal, 1 - 90 degrees*, 2 - 180 degrees, 3 - 270 degrees*,
# 0x10000 - h. flip, 0x20000 - v. flip
# * - These modes require more GPU memory, and so don't work with
#     16MB split
#display_rotate=0

# Uncomment to respect the overscan_* settings with a composite-connected LCD
# monitor
#overscan_scale=1

# Enable test sound/image during boot for manufacturing test.
#test_mode=0


#
# Overclocking Options
#

# ARM, SDRAM and GPU each have their own PLLs and can have unrelated
# frequencies.
#
# The GPU core, h264, v3d and isp share a PLL, so need to have related
# frequencies.
#
# PLL will be set to:
#
#  pll_freq = core_freq * 2^n
#
# ... for smallest n satisfying pll_freq > 600MHz.
#
# GPU core, h264, v3d and isp should all be integer divisors of pll_freq. So
# core_freq=480 sets pll_freq=960. That would allow a
# isp_freq/h264_freq/v3d_freq of 320 with an integer divider of 3.
#
# Alternatively, core_freq=450 => pll_freq =900, *_freq=300.
# ... or, core_freq=375 => pll_freq =750, *_freq=250.

# Don't dedicate a PLL to analogue PWM audio, reducing quality slightly.
# This unlinks core_freq from the rest of the GPU, giving more overclocking
# control.
#avoid_pwm_pll=1
# Removed and made default as of ba7a8fb709adab287495f4e836b1cd3e5c9db409.

# Prevent a red square (over-temperature) or rainbow square (under-voltage)
# from being displayed at the top-right of video ouput when error conditions
# occur.
# Setting avoid_warnings=2 will also maintain turbo mode under these
# conditions.
#avoid_warnings=1

# CPU core frequency (MHz).
[pi1]
#arm_freq=700
[pi2]
#arm_freq=900
[pi3]
#arm_freq=1200
[all]

[pi1]
# GPU core (and L2 cache) frequency (MHz).
#core_freq=250

# GPU Hardware video block frequency (MHz).
#h264_freq=250

# GPU Image sensor pipeline frequency (MHz).
#isp_freq=250

# GPU 3D block frequency (MHz).
#v3d_freq=250

# gpu_freq sets core_freq, h264_freq, isp_freq, and v3d_freq frequencies
# together
#gpu_freq=250
[pi2]
# GPU core frequency (MHz).
#core_freq=250

# GPU Hardware video block frequency (MHz).
#h264_freq=250

# GPU Image sensor pipeline frequency (MHz).
#isp_freq=250

# GPU 3D block frequency (MHz).
#v3d_freq=250

# gpu_freq sets core_freq, h264_freq, isp_freq, and v3d_freq frequencies
# together
#gpu_freq=250
[pi3]
# GPU core frequency (MHz).
#core_freq=400
# N.B. core_freq must be set to 250 for 'pi3-miniuart-bt' DT overlay to work...

# GPU Hardware video block frequency (MHz).
#h264_freq=250

# GPU Image sensor pipeline frequency (MHz).
#isp_freq=400

# GPU 3D block frequency (MHz).
#v3d_freq=300
[all]

# SDRAM frequency (MHz).
[pi1]
#sdram_freq=400
#sdram_schmoo=0x00000000
[pi2]
#sdram_freq=450
#sdram_schmoo=0x00000000
[pi3]
#sdram_freq=450
#sdram_schmoo=0x00000000
[all]

# Minimum values used for dynamic clocking.
#
[pi1]
#arm_freq_min=700
#core_freq_min=250
#gpu_freq_min=250
#sdram_freq_min=400
#over_voltage_min=0
[pi2]
#arm_freq_min=900
#core_freq_min=250
#gpu_freq_min=250
#sdram_freq_min=450
#over_voltage_min=0
# See https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=6201&start=1016
#sdram_schmoo=0x02000020
[pi3]
#arm_freq_min=1200
#core_freq_min=400
#gpu_freq_min=400
#sdram_freq_min=450
#over_voltage_min=0
[all]


# WARNING: Setting any of the parameters which over-volt your Raspberry Pi will
#          set a permanent bit within the SoC and your warranty is void. So if
#          you care about the warranty do not adjust voltage.
#
# 0 is 1.2v, values can range from -16 (0.8v) to 16 (1.6v) in 0.025v steps.
# However, 8/1.4v is the practical upper limit - higher values will shorten the
# SoC's lifespan.
#
# force_turbo and current_limit_override will allow values higher than 6, also
# setting the warranty-bit.
#
# CPU/GPU core voltage adjustment.
#over_voltage=0
#
# SDRAM controller voltage adjustment.
#over_voltage_sdram_c=0
#
# SDRAM I/O voltage adjustment.
#over_voltage_sdram_i=0
#
# SDRAM PHY voltage adjustment.
#over_voltage_sdram_p=0
#
# Set over_voltage_sdram_c, over_voltage_sdram_i, and over_voltage_sdram_p
# together.
#over_voltage_sdram=0

# Disables dynamic cpufreq driver and minimum settings below. Enables
# h264/v3d/isp overclock options.
#
# When busy, ARM frequency go up to "arm_freq" and down to "arm_freq_min" on
# idle. "core_freq", "sdram_freq" and "over_voltage" behave the same.
# "over_voltage" is limited to 6 (1.35V). Non default values for the
# h264/v3d/isp parts are ignored.
#force_turbo=0

# Enables turbo mode from boot for the given value in seconds (up to 60) or
# until cpufreq sets a frequency.
# Can help with sdcard corruption if overclocked
#initial_turbo=0

# Overheat protection. Sets clocks and voltages to default when the SoC reaches
# this Celsius value. Setting this higher than 85 voids warranty.
#temp_limit=85
# N.B.: Can actually only be lowered...
# See https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=6201&start=1110

# Disables SMPS current limit protection when set to "0x5A000020". Can help if
# you are currently hitting a reboot failure when overclocking too high.
#current_limit_override=

# Tested RPi1 values:
#  900MHz CPU/250MHz GPU/500MHz SDRAM
#  900MHz CPU/350MHz GPU
#  930MHz CPU/350MHz GPU/500MHz SDRAM
# 1000MHz CPU/500MHz GPU Core/500MHz SDRAM/1.6v ARM+GPU
#
# Tested RPi2 values:
# 1050MHz CPU/525MHz Core/350MHz GPU/480MHz SDRAM/1.3v

[pi1]
# RPi overclocking defaults:
##arm_freq_min=700
#arm_freq_min=500
#arm_freq=1000
#core_freq_min=250
#core_freq=500
#sdram_freq_min=400
#sdram_freq=500
#over_voltage_min=0
#over_voltage=6
[pi2]
# RPi2 overclocking defaults:
#arm_freq_min=500
#arm_freq=1050
#core_freq_min=250
#core_freq=525
#sdram_freq_min=400
#sdram_freq=500
# See https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=6201&start=1016
#sdram_schmoo=0x02000020
#gpu_freq_min=250
#gpu_freq=350
#over_voltage_min=0
#over_voltage=4
[pi3]
# RPi3 purportedly-working overclocking values:
#arm_freq=1275
#core_freq=500
#sdram_schmoo=0x02000020
#over_voltage_sdram_p=6
#over_voltage_sdram_i=4
#over_voltage_sdram_c=4
#sdram_freq=575
#v3d_freq=500
#h264_freq=333
#over_voltage=4
[all]
#temp_limit=80 # Will throttle to default clock speed if hit
#initial_turbo=60 # Does not affect warranty, speeds up boot

# It is possible to source system parameters from multiple files:
#include extra-config.txt

# vi: set syntax=config colorcolumn=80 nowrap: