Can we use HDMI and MIPI DSI at the same time?

In Jetson Nano product design guide, it mentions that nano module supports MIPI DSI, HDMI and DP, and support at most 2 simultaneous displays.

Does it mean Nano module support to use HDMI and MIPI DSI simultaneously?

Yes, theoretically it should work.

But it is not enabled by default. Device tree changes are required.