|U-Boot config options used in fec_mxc.c
| Selects fec_mxc.c to be compiled into u-boot. Can read out the
| ethaddr from the SoC eFuses (see below).
| Must be defined if CONFIG_FEC_MXC is defined.
| Defaults to MII100 for 100 Base-tx.
| RGMII selects 1000 Base-tx reduced pin count interface.
| RMII selects 100 Base-tx reduced pin count interface.
| Forced on iff MX28.
| Swaps the bytes order of all words(4 byte units) in the packet.
| This should not be specified by a board file. It is cpu specific.
| fec_mxc supports PHYLIB and should be used for new boards.
| Relevant only if PHYLIB not used. Skips auto-negotiation restart.
| Optional, selects the exact phy address that should be connected
| and function fecmxc_initialize will try to initialize it.
| Optional, selects a fixed speed on the MAC interface without asking some
| phy. This is usefull if there is a direct MAC <-> MAC connection, for
| example if the CPU is connected directly via the RGMII interface to a
|Reading the ethaddr from the SoC eFuses:
|if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
|ethaddr variable, then its value gets read from the corresponding eFuses in
|the SoC. See the README files of the specific SoC for details.