How to add Atmel MXT overlay?

Technical Support
, ,
1

Hi! I am trying to enable the touchscreen interface on a iMX6ULL SoM running on an Aster carrier board. I am using the Toradex 7-inch capacitive touchscreen display.

I read that Toradex Linux BSP 5 uses overlays and I am trying to enable the touch controller. I’ve seen here that there should be an overlay file named “colibri-imx6ull_atmel-mxt_overlay.dtbo”. However, I could not find the file in the device-tree-overlay folder downloaded from Git, nor its source (.dts).

Where can I find the correct overlay file for my SoM and carrier board? In addition, how do I compile it?

Also, how can I enable the overlay? I’ve read here that I should find the file “/boot/overlays.txt” where I can add the overlay. However, I did not find that file. Should I manually create it?

2

It seems that the overlays are not supported for iMX6ULL. Thus, the only solution is to compile a custom device tree. Hopefully, Toradex will update the page to make this information more clear.

3

Thanks for your Input. It is clearly written for which module the overlays are supported. The whole devicetree overlays topic is a new thing and work in progress.

Best regards,
Jaski