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