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How to enable a third party 3.5" Display connected to LTDC port on STM32MP157C-EV1 board?

Associate II

I need to test a 3.5" display connected to the LTDC port. How do I disable the 5.5" display that came with the STM32MP157C-EV1 board and use the 3.5" display? I see the ltdc_pins_a: ltdc-a-0{...} entry in the Linux source code device tree: ../linux-4.19.49/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi file.

Do I need to use a Linux command to enable/disable the display? If yes how/what command?

Thank you.

Or do I need to edit the /etc/xdg/weston/weston.ini file? How?

Bernard PUEL
ST Employee


a wiki page is ongoing on the subject to help such customer adaptation but the diversity is huge so difficult to give generic advice. So it will take some times ....

meanwhile you can check this post that will give you some tips: