Raspberry Pi and a HDMI display

I have a Raspberry Pi and an HDMI display on the same device that both need to have a power supply. The Raspberry Pi seems to ask for 5 Volts, the HDMI display is asking for 2 Volts, and my battery is 3.2 Volts. What is the best solution to this? Is there a voltage converter that will have a dual voltage output, or will one of these 2 devices be flexible
on the voltage?