| U-Boot for the Bachmann electronic GmbH OT1200 devices | |
| There are two different versions of the base board, which differ | |
| in the way ethernet is done. The variant detection is done during | |
| runtime based on the address of the found phy. | |
| - "mr" variant | |
| FEC is connected directly to an ethernet switch (KSZ8895). The ethernet | |
| port is always up and auto-negotiation is not possible. | |
| - normal variant | |
| FEC is connected to a normal phy and auto-negotiation is possible. | |
| The variant name is part of the dtb file name loaded by u-boot. This | |
| make is possible to boot the linux kernel and make use variant specific | |
| devicetree (fixed-phy link). | |
| In order to support different display resoltuions/sizes the OT1200 devices | |
| are making use of EDID data stored in an i2c EEPROM. |