# Uncomment some or all of these to enable the optional hardware interfaces # Params: # i2c_arm Set to "on" to enable the ARM's i2c interface # (default "off") # i2c_vc Set to "on" to enable the i2c interface # usually reserved for the VideoCore processor # (default "off") # i2c_arm_baudrate Set the baudrate of the ARM's i2c interface # (default "100000") # i2c_vc_baudrate Set the baudrate of the VideoCore i2c interface # (default "100000") # i2c_baudrate An alias for i2c_arm_baudrate # i2s Set to "on" to enable the i2s interface # (default "off") # spi Set to "on" to enable the spi interfaces # (default "off") # act_led_trigger Choose which activity the LED tracks. # Use "heartbeat" for a nice load indicator. # (default "mmc") # act_led_activelow Set to "on" to invert the sense of the LED # (default "off") # act_led_gpio Set which GPIO pin to use for the activity LED # (in case you want to connect it to an external # device) # (default "16" on a non-Plus board, "47" on a # Plus or Pi 2) # N.B. It is recommended to only enable those interfaces that are needed. # Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc # interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.) # Note also that i2c, i2c_arm and i2c_vc are aliases for the physical # interfaces i2c0 and i2c1. Use of the numeric variants is still possible # but deprecated because the ARM/VC assignments differ between board # revisions. The same board-specific mapping applies to i2c_baudrate, # and the other i2c baudrate parameters. #device_tree_param=i2c_arm=on #device_tree_param=i2c_vc=on #device_tree_param=i2s=on #device_tree_param=spi=on #device_tree_param=act_led_trigger=mmc # Uncomment one of these lines to enable an audio interface #device_tree_overlay=hifiberry-dac #device_tree_overlay=hifiberry-dacplus #device_tree_overlay=hifiberry-digi #device_tree_overlay=hifiberry-amp #device_tree_overlay=iqaudio-dac #device_tree_overlay=iqaudio-dacplus # Uncomment to enable the lirc-rpi module # Params: gpio_out_pin GPIO pin for output (default "17") # gpio_in_pin GPIO pin for input (default "18") # gpio_in_pull Pull up/down/off on the input pin # (default "down") # sense Override the IR receive auto-detection logic: # "1" = force active high # "0" = force active low # "-1" = use auto-detection # (default "-1") # softcarrier Turn the software carrier "on" or "off" # (default "on") # invert "on" = invert the output pin (default "off") # debug "on" = enable additional debug messages # (default "off") #device_tree_overlay=lirc-rpi #device_tree_param=gpio_out_pin=17 #device_tree_param=gpio_in_pin=18 #device_tree_param=gpio_in_pull=down # Uncomment to enable the w1-gpio Onewire interface module # Use this overlay if you *don't* need a pin to drive an external pullup # N.B. The parasitic power feature is not yet functional using DT. # Params: gpiopin GPIO pin for I/O (default "4") #device_tree_overlay=w1-gpio #device_tree_param=gpiopin=4 # Uncomment to enable the w1-gpio Onewire interface module # Use this overlay if you *do* need a pin to drive an external pullup # N.B. The parasitic power feature is not yet functional using DT. # Params: gpiopin GPIO pin for I/O (default "4") # pullup GPIO pin for external pullup (default "5") #device_tree_overlay=w1-gpio #device_tree_param=gpiopin=4 #device_tree_param=pullup=5 # Uncomment to enable pps-gpio (pulse-per-second time signal via GPIO) # Params: gpiopin GPIO input pin (default "18") #device_tree_overlay=pps-gpio #device_tree_param=gpiopin=18 # Uncomment to enable a generic I2C RTC overlay supporting ds1307, ds3231, pcf2127, and pcf8523 #device_tree_overlay=i2c-rtc # Uncomment to enable the PCF8523 Real Time Clock #device_tree_overlay=pcf8523-rtc # Uncomment to enable the DS1307 Real Time Clock #device_tree_overlay=ds1307-rtc # Uncomment to enable the BMP085/BMP180 temperature/pressure sensor #device_tree_overlay=bmp085_i2c-sensor # Uncomment to enable an FB TFT module #device_tree_overlay=hy28a #device_tree_overlay=hy28b #device_tree_overlay=piscreen #device_tree_overlay=rpi-display # Uncomment to enable the Microchip ENC28J60 Ethernet Controller #device_tree_overlay=enc28j60 # Uncomment if you get no picture on HDMI for a default "safe" mode #hdmi_safe=1 # 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 # Uncomment if hdmi display is not detected and composite is being output #hdmi_force_hotplug=1 # Uncomment to force a specific HDMI mode (this will force VGA) #hdmi_group=1 #hdmi_mode=1 # Uncomment to force a HDMI mode rather than DVI. This can make audio work in # DMT (computer monitor) modes #hdmi_drive=2 # Uncomment to set monitor mode to DMT #hdmi_group=2 # Uncomment to increase signal to HDMI, if you have interference, blanking, or # no display #config_hdmi_boost=4 # Uncomment for composite PAL #sdtv_mode=2 # Uncomment to overclock the ARM core. 700 MHz is the default. #arm_freq=800 # for more options see http://elinux.org/RPi_config.txt ## Some over clocking settings, governor already set to ondemand ##None #arm_freq=700 #core_freq=250 #sdram_freq=400 #over_voltage=0 ##Modest #arm_freq=800 #core_freq=300 #sdram_freq=400 #over_voltage=0 ##Medium #arm_freq=900 #core_freq=333 #sdram_freq=450 #over_voltage=2 ##High #arm_freq=950 #core_freq=450 #sdram_freq=450 #over_voltage=6 ##Turbo #arm_freq=1000 #core_freq=500 #sdram_freq=500 #over_voltage=6 gpu_mem=64