PKGBUILDs/core/linux-raspberrypi-2/config.txt

# Uncomment some or all of these to enable the optional hardware interfaces
# Params:
#         i2c_arm (default "off")  Set to "on" to enable the ARM's i2c interface
#         i2c_vc (default "off")   Set to "on" to enable the i2c interface
#                                  usually reserved for the VideoCore processor
#         i2c                      An alias for i2c_arm
#         i2s (default "off")      Set to "on" to enable the i2s interface
#         spi (default "off")      Set to "on" to enable the spi interfaces
#         act_led_trigger (default "mmc")
#                                  Choose which activity the LED tracks.
#                                  Use "heartbeat" for a nice load indicator.
#         act_led_activelow (default "off")
#                                  Set to "on" to invert the sense of the LED
#         act_led_gpio (default "16" on a non-Plus board, "47" on a Plus)
#                                  Set which GPIO pin to use for the activity LED
#                                  (in case you want to connect it to an external
#                                  device).
#
#         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_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.
#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 (default "17")   GPIO pin for output
#         gpio_in_pin (default "18")    GPIO pin for input
#         gpio_in_pull (default "down") Pull up/down/off on the input pin
#         sense (defaults to "-1")      Override the IR receive auto-detection
#                                       logic:
#                                       "1" = force active high
#                                       "0" = force active low
#                                       "-1" = use auto-detection
#         softcarrier (default "on")    Turn the software carrier "on" or "off".
#         invert (default "off")        "on" = invert the output pin.
#         debug (default "off")         "on" = enable additional debug messages.
#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 (default "4")         GPIO pin for I/O
#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 (default "4")         GPIO pin for I/O
#         pullup  (default "5")         GPIO pin for external pullup
#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 (default "18")        GPIO input pin
#device_tree_overlay=pps-gpio
#device_tree_param=gpiopin=18

# Uncomment to enable pfc8523 Real Time Clock
#device_tree_overlay=pfc8523-rtc

# 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_512=64
gpu_mem_256=64