I’m designing a custom carrier board for the TX2, implementing the HDMI. I’ve got HDMI working, but only when I use the following command:
echo 1 > /sys/kernel/debug/tegra_hdmi/hotplug
Now I’ve seem to found the problem, our HPD isn’t inverting while the dev kit does have the HPD inverted. How do I go about change the behavior of this? The OEM design manual states the following:
Level shifters required on DDC/HPD. Jetson TX2/TX2i pads are not 5V tolerant & cannot directly meet HDMI VIL/VIH
requirements. HPD level shifter can be non-inverting or inverting.
Thus, I guess there should be a software solution to fix this problem?
Thanks in advance,