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Khandoker Mazidul Haque

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  1. I also bought same HDMI Display module and able to run the display through OPI-Zero+2 HDMI Interface. But could not interface the touch screen over SPI1. This touch system uses XPT2046 / ADS7846 IC for touch interface over SPI communication. The problem is this module's touch interface has a manufacturing error. The XPT2046 is wrongly connected on the PCB. As the datasheet described, the assembled IC is TSSOP package, But the connection is given depends on QFN package. I checked that OPI-Zero+2 is supplying the SPI data correctly, but the IC is not responding, then I checked the connection and found the error. I wasted a week suffering this error.
  2. Yes, changing the mode 31 pll_video=594 and then apply the command h3disp -m 31 -d solved the problem for 800x480 res TFP401 based displays.
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