[U-Boot-Users] [patch #5/11] FEC driver update for 8xx

[Pantelis Antoniou <panto@intracom.gr>]

Hello

The following patch improves and fixes various things
in the FEC driver on the 8xx series of processors.

The changes are as following:

1. The new 87x and 88x series of processors have two FECs,
   and the new driver supports them both.
2. Another change in the 87x/88x series is support for
   the RMII (Reduced MII) interface. However numerous
   changes are needed to make it work since the PHYs
   are connected to the same lines. That means that
   you have to address them correctly over the MII
   interface.
3. We now correctly match the MII/RMII interface
   configuration to what the PHY reports.

The following new defines are supported:

  CONFIG_ETHER_ON_FEC[12]

  Enable FEC on given FEC

  CONFIG_FEC[12]_PHY

  Assign PHY address to FEC. If -1 means probe.

  CONFIG_FEC[12]_PHY_NORXERR

  The PHY does not have a RXERR line (RMII only).

  CONFIG_RMII

  Enable RMII mode common for any activated FECs.
  
For compatibility reasons the name of the first
interface remains unchanged at 'FEC ETHERNET' while
the second is name 'FEC2 ETHERNET'.

Regards

Pantelis

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