Custom LCD panel on stm32157C-DK2 probe problems

MBeli.1 · ‎2022-10-03

We have custom board design based on stm32157C-DK2. We just ise other LCD panel. We have updated device tree and probe function of panel is called. But in method: ltdc_load it fails to find any panel.bridge when calling: drm_of_find_panel_or_bridge (return -517 EPROBE_DEFFER)

Is there something else to check if we want to use other panel please? Thanks.

MBeli.1 · ‎2022-10-10

Hi @OlivierK ,

I've already resolved an issue. I have an issue with hdmi and ltdc nodes. Debugging took me a while but display now works as expected. Thanks.

View solution in original post

OlivierK · ‎2022-10-10

Hi MBeli.1 (Community Member)

Have you checked this page?

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

Could you please give the context? which OSTL version used, what LCD panel model?

Rgds,

Olivier

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MBeli.1 · ‎2022-10-10

Hi @OlivierK ,

I've already resolved an issue. I have an issue with hdmi and ltdc nodes. Debugging took me a while but display now works as expected. Thanks.

OlivierK · ‎2022-10-10

H iMBeli.1 (Community Member)

Thanks for your return of experience. Glad that you are sorted out.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.