2025-08-19 2:52 AM
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.
2025-09-08 6:45 PM
Hi @Erwan SZYMANSKI ,
Yes, I have the panel spec as below.
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.