The BTTV HOWTO
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# A. Optional Arguments for Loading Modules

videodev.o
-----------------------------
This is the basic video4linux module, all video
drivers (incl. bttv) register themselves here.
i2c.o
------------------------
The generic i2c module. It does much of the i2c bus
management, all other modules (except videodev.o)
use this one.
modprobe args:
scan=1 scan the bus for i2c devices
verbose=0 shut up i2c
i2c_debug=1 for debugging, it sticks the
whole (software) i2c bus traffic to the syslog
bttv.o
-------------------------
The bt848 (grabber chip) driver.
modprobe args:
remap=adr remap Bt848 memory to address less than 20
vidmem=base frame buffer address over 20 (of
graphic card)
triton1=0/1 for Triton1 compatibility; Triton1 is
automatically recognized but this might also help with other chipsets
pll=0/1/2 pll settings (0: don't use PLL; 1: 28 MHz crystal installed
2: 35 MHz crystal installed
radio=0/1 card supports radio
card=n card type: see the next section for the complete list;
remap, card, radio and pll accept up to four comma-separated arguments
(for multiple boards). The CARD and PLL defines from the Makefile
are used as defaults.
msp3400.o
----------------------------
The driver for the msp34xx sound processor chips. If you have a
stereo card, you probably want to modprobe this one.
modprobe args:
debug=1/2 print some debug info to the syslog, 2 is more verbose.
*tea6300.o
-----------------------------
The driver for the tea6300 fader chip. If you have a stereo
card and the msp3400.o doesn't work, you might want to try this
one. This chip is seen on most STB TV/FM cards (usually from
Gateway OEM sold surplus on auction sites).
modprobe args:
debug=1 print some debug info to the syslog.
*tda8425.o
-----------------------------
The driver for the tda8425 fader chip. This driver used to be
part of bttv.c, so if your sound used to work but does not
anymore, try loading this module.
modprobe args:
debug=1 print some debug info to the syslog.
*tda9855.o
-----------------------------
The driver for the tda9855 stereo decoder / audio processor chip.
modprobe args:
debug=1 print some debug info to the syslog.
*dpl3518.o
-----------------------------
Driver for the dpl3518a Dolby Pro Logic Processor.
modprobe args:
debug=1 print some debug info to the syslog.
tuner.o
--------------------------
The tuner driver. You need this unless you want to use only
with a camera or external tuner.
modprobe args:
debug=1 print some debug info to the syslog
type=n type of the tuner chip. n as seen in Section 4
i2c_chardev.o
--------------------------------
Provides a character device for i2c bus access. Works for 2.1.x
only, not compiled by default.

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