U-boot splash screen dual LVDS Apalis imx8

Technical Support
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21

Hi @henrique.tx ,

I guess that the investigation is still ongoing. When can we expect a decision?

Best regards,
floji

22

Hi @floji !

We carried out some investigation towards trying to enable video on U-boot trying to enable Toradex LVDS display (Capacitive Touch Display 10.1" LVDS | Toradex Developer Center).

On Toradex BSP 6’s U-boot (specifically this branch: u-boot-toradex.git - U-Boot bootloader for Apalis and Colibri modules) there are some drivers for the lvds display controller for i.MX8QM.

Please find attached the patch that we came up with.

u-boot_splash_wip.patch (37.4 KB)

Please note that this is not the solution, but a work in progress and is not working. I am sharing this here with you so you could continue the investigation on your side. With this patch, seems like the display controller is initialized, but we still can’t get an image out of the display. We know that the backlight is not working for the display on U-boot (PWM limitation on U-boot).

At the moment, we do not have it working. We might try again soon, but there are no guarantees.

Best regards,