Video Interface Bridging Adapter Boards HDMI to MIPI DSI - TFT-Ansteuerboard Total Solution Touch
Greg on Twitter: "Can't find a stocked, NDA free, MIPI DSI -> DVI/HDMI converter IC? Just build your own with an FPGA 😅 Will need some gateware, but otherwise a pretty simple
SL-MIPI-LVDS-HDMI-CNV-11 Datasheet and Pinout - SomLabs Wiki