As stated in the title, I have seen discussions regarding boot logo display on HDMI.
Do Genio platforms support displaying a boot logo on DP (DisplayPort)over Type-C?
Hi @rmyoshi
No, displaying the boot logo on DP over Type-C is not supported on any Genio platforms.
This is primarily because PD (Power Delivery) mux drivers are not implemented in U-Boot for Yocto, nor in LK (Little Kernel) for Android. Both boot stages lack the necessary support to initialize DP over Type-C interfaces and enable the display output required for showing the boot logo. As a result, DP over Type-C cannot be used as the main display during the boot process.
However, DP over Type-C is fully supported in the Linux kernel. In practice, this means that for Android-based systems, DP over Type-C may only be used as a secondary display after the operating system has booted. The main display, which is responsible for showing the boot logo during boot, cannot utilize DP over Type-C due to the absence of PD mux driver support in the early bootloader stages.
If you require display output over DP Type-C for the main display, additional driver support needs to be added to the bootloader (U-Boot or LK), which is currently not planned for Genio platforms.