Changes

*'''Optional lines''': Optinal lines are IGEP COM AQUILA SODIMM lines designed to work with different functionalities. Change the default functionality its possible. You should revise the Mux configuration at [http://www.ti.com/lit/gpn/am3354 AM335x datasheet] .

== Power sources ==

* Resets lines are very useful to restart ICs (LDOs, Transceivers, Level shifters, etc.).

* The most priority reset is PMIC_PWR_BTN, so it is important to use at least this one.

== Ethernet ==