Resolved! STM32H7B3VIH6's LTDC does not generate pixel outputs
All control signals seem to be good: `DEN`, `VSYNC`, `HSYNC`, `CLK`. but pixel signals (R0 ~ R7, G0 ~ G7, B0 ~ B7) are always low. 1) DEN. 2) HSYNC. 3) VSYNC. 4) CLKalthough control signals correctly work, no pixel data lanes do not. Code that genera...