External DT

sanjaysb · ‎2025-11-16

Hi,

i need to modify the default debug uart serial in device tree of all the boot components (including u-boot, tf-a, optee etc) in stm32mp257f-ev1.

I saw that external-dt_%.bb is fetching git://github.com/STMicroelectronics/dt-stm32mp.git and also EXTERNAL_DT is enabled by default, but i want to use my custom dt for the fial build by default instead of stm32mp257f-ev1.dtb.

I want to add my custom dt with the custom name as default dtb used in all the component, im hoping for a solution for this to maintain all my dt at one place and modify. i have too many changes to make and i dont want to patch the stm32mp257f-ev1.dts in the kernel source tree.

Hoping for a quick reply, thanks in advance.

Olivier GALLIEN · ‎2025-11-20

Hi @sanjaysb

To generate an image with custom device tree the recommended solution is rather How to compile the device tree with the Distribution Package - stm32mpu

Hope it help

Olivier

Olivier GALLIEN
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