Kernel-with-device-tree

use device tree

To use device tree on arm both bootloader (u-boot) and kernel should be compiled with the support of device tree.

u-boot

To enable device tree on u-boot, it's quite simple, just add "#define CONFIG_OF_LIBFDT" in your configuration file (include/configs/<board>.h).

On armadeus SDK, this file is in this directory: buildroot/target/device/armadeus/<board>/<board>-u-boot-<version>.h

For example, for u-boot 2012.04 on apf27, it's: buildroot/target/device/armadeus/apf27/apf27-u-boot-2012.04.h

NOTE: on u-boot 2012.04, the command bootm with device tree is broken. If you want to use it,

you need to fix it with the following patch: http://git.denx.de/?p=u-boot.git;a=commit;h=1723997610ace497252d6f9a44ec76c06951ae43

kernel

The kernel 3.4 has already the support sor form arm soc.

• imxl (apf9328) : no
• imx27 (apf27) : yes
• imx51 (apf51) : yes
• imx28 (apf28) : no

So apf27 and apf51 can use device tree.