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Enable DSI panel on STM32MP257F-EV1

Tim_ho
Associate III

Dear ST Developer Support,

How to enable MIPI DSI panel on STM32MP257F-EV1?

Does it have any user guide for reference?

I only found dsi to hdmi board on device tree.

I urgently need your help! Thanks.

10 REPLIES 10
Tim_ho
Associate III

Hi @Erwan SZYMANSKI ,

Yes, I have the panel spec as below.

Tim_ho_0-1757381394930.png

My previous question is the pixel clock is fixed in u-boot? I found some message in stm32_ltdc.c driver, it notes "TODO Below parameters are hard-coded for the moment..."

Do you know why this comment is there? Is it means that I need to set fixed parameters?

Besides, could I use the panel-simple.c driver in kernel to drive my panel? Or I need to write my panel driver?

I found the panel is used "stm32_ltdc.c" driver in u-boot to drive the panel and it would according to "stm32mp257f-ev1.dts" device tree to configure our panel. So, I don't need to write my panel driver in u-boot?

I tried to use the same panel timing in kernel and u-boot stages, but it seems that the timing cannot effect in kernel device tree.

Thank to your help.