Hi, I bought NXP iMX8M-mini evaluation board with MX8_DSI_OLED1 and the display shows nothing when I connect it to the board. If I use IMX-MIPI-HDMI converter and connect it to external HDMI display, it works fine.
I tested Test points: TP4, TP5, TP6 (all good ground):
- TP7 => 4.87v
- TP8 => 3.31v
- TP9 => 1.81v
- TP10 => 0v
- TP11 => 0v
- TP12 => 0v
- OLED_EN => 0v
It looks like the display is not being enabled, so the EL_VDD, EL_VSS, and VSP voltages are not being output from the TPS65651 chip.
How do I troubleshoot MX8_DSI_OLED1 display?