Hello,
The VOUT1 video output of my customer system worked properly in its version 01. They have made a 02 PCB revision and got an odd behavior, when VOUT1 is connected the same way in both board revisions.
In the 01 revision, vout1_clk is generated correctly from the pinmux tool-generated padconf.
In the 02 revision, the voltage level on vout1_clk is too low, making the video serializer failing to synchronize.
However, by changing the padconf definition from output to input in revision 02, there is an improvement as the image manages to display, but one may see that some pixels in parts of the image are incorrect.
Finally, the 02 display output becomes good after we reset the board through PORZ, but resetting through u-boot or at the OS console level does not improve the display.
Could you please help the customer fix this issue? Thank you.
Best regards,
François.