README.fec_mxc 1.4 KB

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  1. U-Boot config options used in fec_mxc.c
  2. CONFIG_FEC_MXC
  3. Selects fec_mxc.c to be compiled into u-boot. Can read out the
  4. ethaddr from the SoC eFuses (see below).
  5. CONFIG_MII
  6. Must be defined if CONFIG_FEC_MXC is defined.
  7. CONFIG_FEC_XCV_TYPE
  8. Defaults to MII100 for 100 Base-tx.
  9. RGMII selects 1000 Base-tx reduced pin count interface.
  10. RMII selects 100 Base-tx reduced pin count interface.
  11. CONFIG_FEC_MXC_SWAP_PACKET
  12. Forced on iff MX28.
  13. Swaps the bytes order of all words(4 byte units) in the packet.
  14. This should not be specified by a board file. It is cpu specific.
  15. CONFIG_PHYLIB
  16. fec_mxc supports PHYLIB and should be used for new boards.
  17. CONFIG_FEC_MXC_NO_ANEG
  18. Relevant only if PHYLIB not used. Skips auto-negotiation restart.
  19. CONFIG_FEC_MXC_PHYADDR
  20. Optional, selects the exact phy address that should be connected
  21. and function fecmxc_initialize will try to initialize it.
  22. CONFIG_FEC_FIXED_SPEED
  23. Optional, selects a fixed speed on the MAC interface without asking some
  24. phy. This is usefull if there is a direct MAC <-> MAC connection, for
  25. example if the CPU is connected directly via the RGMII interface to a
  26. ethernet-switch.
  27. Reading the ethaddr from the SoC eFuses:
  28. if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
  29. ethaddr variable, then its value gets read from the corresponding eFuses in
  30. the SoC. See the README files of the specific SoC for details.