I have a custom PCB for my iMX8MP module, schematic is attached above, when I put my module into the Dahlia dev board, I get some HDMI output on the monitor.
Could anybody advice me where I went wrong in my schematic? I also tried connecting the CEC pin from connector to the IC with a pullup to 3v3, no luck so far!
Dear @eoin_oc1, hope you’re doing good.
Have you tried connecting pin 23 of the TPD12S520 to pin 13 of the X37 like on the example here:
I have tried this, with a 27k pullup to 3.3, no luck.
Is the HDMI chip just a dumb translator, or does Linux need to have knowledge of this particular chip in the device tree?
Our Hardware expert is currently sick and once he comes back he’ll guide you properly.
I have since fixed this issue, I should be using the TPD12S521 and not the 520, 520 for HDMI RX ports, 521 for TX ports