Custom Carrier board HDMI not working with i.MX8

Hi Everyone , We made a prototype custom carrier board, It’s work with i.MX6
But does not work with i.MX8 and Just can’t use hdmi,
so ssh , ethernet , everything OK, What should I check?

We look forward to your answer

HDMI in the Easy Installer works but after other image install dose not work

You need to apply appropriate Device Tree overlay Device Tree Overlays (Linux) | Toradex Developer Center

Hi alex it’s resolution issue, we found solution, thanks your service