Documentation/video4linux/bttv/Modprobe.conf - arm/linux-arm64-legacy - Git at Google

 # i2c
 alias char-major-89	i2c-dev
 options i2c-core	i2c_debug=1
 options i2c-algo-bit	bit_test=1

 # bttv
 alias char-major-81	videodev
 alias char-major-81-0	bttv
 options	bttv		card=2 radio=1
 options	tuner		debug=1
	# i2c
	alias char-major-89 i2c-dev
	options i2c-core i2c_debug=1
	options i2c-algo-bit bit_test=1

	# bttv
	alias char-major-81 videodev
	alias char-major-81-0 bttv
	options bttv card=2 radio=1
	options tuner debug=1