Hi @jars121
Sorry for the long delay.
I could make the splash screen appear by following the article Splash Screen on the Linux Kernel and, for the Disabling the Framebuffer Console section, I defined setupargs like the following:
Apalis iMX8 # setenv setupargs "vt.global_cursor_default=0 consoleblank=0 console=ttyLP1 earlycon"
Best regards.