how many LED chip kernel source files does one really need?

poking around in default kernel configuration to build a
"core-image-minimal" for my BBB and i notice that, under "LED
Support", the following options are all selected as modules:

* LED support for LM3642 Chip
* LED support for LM355x Chips, LM3554 and LM3556
* LED support for the BlinkM I2C RGB LE

is all that really necessary? i'm just about to check the H/W manual
but it seems like i don't need all of that for proper LED operation,
do i?