# Does mender change u-boot dts?

**URL:** <https://hub.mender.io/t/does-mender-change-u-boot-dts/318>\
**Category:** General Discussions\
**Tags:** sumo, raspberrypi-cm3\
**Created:** [March 8, 2019, 12:00pm UTC](https://hub.mender.io/t/does-mender-change-u-boot-dts/318 "2019-03-08T12:00:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\
**Post date:** [March 8, 2019, 12:07pm UTC](https://hub.mender.io/t/does-mender-change-u-boot-dts/318/2 "2019-03-08T12:07:02Z")

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Have you seen the " Problem using ‘dtoverlay=pi3-disable-bt’" section in “Known Issues” @ [Raspberry Pi Compute Module 3](https://hub.mender.io/t/raspberry-pi-compute-module-3/110)?

Also it is the boot firmware that chooses which device tree to load, and the [boot scripts](https://github.com/mendersoftware/meta-mender/blob/master/meta-mender-raspberrypi/recipes-bsp/rpi-u-boot-scr/files/boot.cmd.in) in meta-mender re-use that.

> what is the actual device tree which is used by U-Boot in this case

This question can lead to confusion, U-boot has a built-in (part of its source code) device tree which it is used so none of the mentioned dtb files are used by U-boot.

The dtb files that you are referring to are something that is passed along to the Linux kernel and parsed by Linux kernel only.

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_[View the full topic](https://hub.mender.io/t/does-mender-change-u-boot-dts/318)._