[U-Boot] Is it possible to send HDMI signal from u-boot on PandaBoard?

[Qiao.HelloWorld at gmail.com]

Hi everyone,

I'm working on modifying u-boot source code for testing HDMI function on
PandaBoard (CPU is TI OMAP4430).
There seems no related information on the web.

I've studied the android kernel source, and it confused me that the linux
video driver access lots of registers which are not mentioned in the
OMAP4430 Technical Reference Manual.

However, the driver of android is so huge and complicated that I can't port
it on u-boot.

Can anyone tell me how to control HDMI module inside OMAP4430 by u-boot? I
just want to do some tiny tasks, such as showing the Android logo or
filling the screen of specified color.

Maybe give some suggestions or directions for me to study is OK.

Or is it impossible? and why?


Thanks a lot.

Qiao