There are many dtb file in out/arch/arm64/boot/dts like below after kernel compile,as I know kernel-dtb and bootloader-dtb only use the tegra194-p2888-0001-p2822-0000.dtb, so what are the purposes of other files?
ddot tegra186-quill-p3310-1000-c00-00-auo-1080p-edp.dtb tegra194-p2888-0001-p2822-0000-adafruit-sph0645lm4h.dtbo
tegra186-quill-e3313-1000-a00-00-e2598.dtb tegra186-quill-p3310-1000-c03-00-ape-cam.dtb tegra194-p2888-0001-p2822-0000.dtb
tegra186-quill-hdmi-primary-p3310-1000-a00-00.dtb tegra186-quill-p3310-1000-c03-00-base-adafruit-sph0645lm4h.dtbo tegra194-p2888-0001-p2822-0000-fe-pi-audio-z-v2.dtbo
tegra186-quill-hdmi-primary-p3310-1000-a00-00-imx274.dtb tegra186-quill-p3310-1000-c03-00-base.dtb tegra194-p2888-0001-p2822-0000-hdr40.dtbo
tegra186-quill-hdmi-primary-p3310-1000-c03-00.dtb tegra186-quill-p3310-1000-c03-00-base-fe-pi-audio-z-v2.dtbo tegra194-p2888-0001-p2822-0000-imx185_v1.dtb
tegra186-quill-hdmi-primary-p3310-1000-c03-00-imx274.dtb tegra186-quill-p3310-1000-c03-00-base-hdr40.dtbo tegra194-p2888-0001-p2822-0000-imx274-hdmi.dtb
tegra186-quill-p3310-1000-a00-00-ape-cam.dtb tegra186-quill-p3310-1000-c03-00-dsi-dp.dtb tegra194-p2888-0001-p2822-0000-maxn.dtb
tegra186-quill-p3310-1000-a00-00-base.dtb tegra186-quill-p3310-1000-c03-00-dsi-hdmi-dp.dtb tegra194-p2888-0006-e3366-1199.dtb
tegra186-quill-p3310-1000-a00-00-base-mods-display.dtb tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi.dtb tegra194-p2888-0006-p2822-0000.dtb
tegra186-quill-p3310-1000-a00-00-dsi-dp.dtb tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi-imx274-hdmiin.dtb tegra194-p2888-as-0006-p2822-0000.dtb
tegra186-quill-p3310-1000-a00-00-dsi-hdmi-dp.dtb tegra186-quill-p3310-1000-c03-00-imx185_v1.dtb tegra194-p2888-as-p3668-p2822-0000.dtb
tegra186-quill-p3310-1000-a00-00-edp.dtb tegra186-quill-p3489-0888-a00-00-base.dtb tegra194-p3668-all-p3509-0000-adafruit-sph0645lm4h.dtbo
tegra186-quill-p3310-1000-a00-00-imx185_v1.dtb tegra186-quill-p3489-0888-a00-00-e2598.dtb tegra194-p3668-all-p3509-0000.dtb
tegra186-quill-p3310-1000-a00-00-imx274.dtb tegra186-quill-p3489-1000-a00-00-e2598.dtb tegra194-p3668-all-p3509-0000-fe-pi-audio-z-v2.dtbo
tegra186-quill-p3310-1000-a00-00-lc898212.dtb tegra186-quill-p3489-1000-a00-00-ucm1.dtb tegra194-p3668-all-p3509-0000-hdr40.dtbo
tegra186-quill-p3310-1000-a00-overlay.dtbo tegra186-quill-p3489-1000-a00-00-ucm2.dtb
tegra186-quill-p3310-1000-as-0888.dtb tegra194-p2888-0001-e3366-1199.dtb