MCM-iMX95 Yocto Linux: Device trees
Available Device Trees
The current release includes the following dtb files:
Deafualt Device tree: mcm-imx95-evk.dtb [1]
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 and device tree overlay name that will be loaded into the RAM.
The U-boot fdtofile variable contains the device tree overlay name that will be loaded into the RAM in addition to main device tree.
This variable can be changed by:
| Environment | Command |
| U-Boot | setenv fdtfile <fdt_file_name>; saveenv; |
| Linux | fw_setenv fdtfile <fdt_file_name>
fw_setenv fdtofile 'fdto_file_name_1 fdto_file_name_2 fdto_file_name_3' |
- 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> |
