UCM-iMX95 Yocto Linux: Device trees
Available Device Trees
The current release includes the following dtb files:
| Device Tree | Hardware Configuration and Features | Description |
| ucm-imx95-headless.dtb | default hardware configuration | |
|
ucm-imx95.dtb |
ucm-imx95-headless.dtb |
headless |
Set a device tree
The current release provides two methods to switch between dtb files:
- U-Boot environment
The U-boot fdtfile variable contains the device tree name that will be loaded into the RAM. This variable can be changed by:
| Environment | Command |
| U-Boot | setenv fdtfile <fdt_file_name>; saveenv; |
| Linux | fw_setenv fdtfile <fdt_file_name> |
- GRUB environment (if the image was created with the meta-compulab-uefi layer)
| Environment | Command/Procedure |
| GRUB Boot Menu | Goto "Advanced Boot Options" and choose a device tree from the provided dtb list. |
| Linux | grub-editenv /boot/EFI/BOOT/grubenv set fdt_file=<fdt_file_name> |
