The issue that you are seeing is often caused by bad timings or polarities. Please check the timings and the polarities (vsync levels, data/de/sync edges) match what the panel wants. Also, looks like you are using omapfb and have hacked panel-tlc59108.c driver for your need. panel-tlc59108.c driver is a combined driver for the TLC59108 LED chip and the panel used for DRA7 EVMs. It should not be used anywhere else, unless the HW design more or less matches that of DRA7 EVM, and has TLC59108 If possible, you should switch to panel-dpi and supply the timings from the DT file, or if the panel require programming, write your own panel drivers. Also, switch to omapdrm if the features don't depend upon omapfb. omapfb is no longer supported by TI.
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