I used Yocto to build a 6.6.23 version wic image and flashed it to my imx8MM custom board. It booted successfully, and I can log in through Minicom, but the display is not working. I tried using other DTBs, such as imx8mm-ddr4-evk-rm67191.dtb, but they didn't work. The display is connected directly through MIPI, not MIPI to HDMI. How can I turn on the display? Should I modify the DTS from the Yocto project or change the bootloader?