Where to find the default dts files (the ones that are built on the 157C-DK2)?

[NChri.1]

If I build the dts files that come with the developer package, I lose the ethernet. I need to add support for USART3 and UART7, but any new build of the device tree will make the ethernet disappear.

[Olivier GALLIEN]

Hi @NChri.1​ 

The default dts is exactly the one which is in developer package.

In order to investigate the issue maybe good to look at :

https://wiki.st.com/stm32mpu/wiki/STM32MP15_device_tree

https://wiki.st.com/stm32mpu/wiki/Ethernet_device_tree_configuration

Olivier

[NChri.1]

Well, I think I followed the wiki

Eventually, I want to edit the file arch/arm/boot/stm157a-dk1.dts (to add those uarts I need to use)

Before modifying it, I built with

make dtbs

and then I copied all the produced dtb files into the boot of the DK2 device. When I do that ethernet is not there anymore.

Note that with the modification of the above file, I do get the uarts, but, as I said, I lose the ethernet (no eth0 found)

I will look into the links you referred to, the second one may be very useful.

Edit: Well, I looked into that... I do not see anything that it is not in my files.

Edit 2: I also lose the wlan...