nanu wrote:Is it possible to make /get an adapter just converting to lvds without the need of a extra power supply, maybe without backlighting support?
HDMI specification does not define max. current for 5V line, just states that it should be at least 55 mA. RasPi powers this line from system 5V power rail through BAT54 diode that has 200 mA forward current limitation. 200mA is enough for HDMI-LVDS converter itself, but most LCDs with size >7" will additionally require >200mA just for logic part excluding backlight.
Therefore, we added USB port to our adapter to power RasPi from converter, so that whole system will work from single power supply. You can also make a trick by powering RasPi from our adapter through HDMI by changing this BAT54 to shortcut, and by installing R9 on our adapter.