| Christian Gmeiner | 39d0973 | 2014-10-02 13:33:46 +0200 | [diff] [blame] | 1 | U-Boot for the Bachmann electronic GmbH OT1200 devices |
| 2 | |
| 3 | There are two different versions of the base board, which differ |
| 4 | in the way ethernet is done. The variant detection is done during |
| 5 | runtime based on the address of the found phy. |
| 6 | |
| 7 | - "mr" variant |
| 8 | FEC is connected directly to an ethernet switch (KSZ8895). The ethernet |
| 9 | port is always up and auto-negotiation is not possible. |
| 10 | |
| 11 | - normal variant |
| 12 | FEC is connected to a normal phy and auto-negotiation is possible. |
| 13 | |
| 14 | |
| 15 | The variant name is part of the dtb file name loaded by u-boot. This |
| 16 | make is possible to boot the linux kernel and make use variant specific |
| 17 | devicetree (fixed-phy link). |
| 18 | |
| 19 | In order to support different display resoltuions/sizes the OT1200 devices |
| 20 | are making use of EDID data stored in an i2c EEPROM. |