Compiling an LCD driver for armbian on Allwinner A33.

[Patrick 42]

Hi, I'am Patrick from France, it is my first post on the forum.

 

I am porting the Zortrax m200 plus 3D printer to Armbian and my last important step would be to have the LCD screen working.

I cross compiled my module but I have this message when installing it:

# insmod panel-himax-hx8394.ko 
[ 1760.189919] BPF: [120533] Invalid name_offset:2238391
[ 1760.195183] failed to validate module [panel_himax_hx8394] BTF: -22
insmod: ERROR: could not insert module panel-himax-hx8394.ko: Invalid parameters

 

Then I added the module source code to the sources, but calling ./compile.sh seems to update the repo and revert my changes such as I do not see my module in there.

 

The next possibility would be to create an image with the kernel headers included. I will try to compile the driver on the system.

And is there another way?

 

 

Edited 23 hours ago by Patrick 42

[robertoj]

You dont need to cross-compile. You need to select the in-kernel-source option: https://www.kernelconfig.io/config_drm_panel_himax_hx8394 within the armbian build process.

 

Then you need to create a DTS like: https://forum.armbian.com/topic/47971-driving-the-ili9488-lcd-40-inch-cheap-chinese-clone/

 

 

And also dig through the experience in this thread: https://forum.armbian.com/topic/50963-dsi-display-does-not-work-on-raspberry-pi-5/#comment-216030

 

 

Send photo of the a33 and LCD

[Patrick 42]

I have managed to compile the driver on the target with a brand new image compiled using "./compile.sh INSTALL_HEADERS=yes". Yet I would like to cross compile it. If you know how, I will greatly appreciate if you give the method.

Edited 21 hours ago by Patrick 42

[Patrick 42]

Thanks  Robertoj

All the documentation for the board is here https://github.com/zharijs/zmxxxp-re

But the LCD is not an himax-hx8394. The screen is a "MTF0397SWI-06" using the chip OTM8019A.

It just that I am starting from this driver to port the sunxi driver: sl698ph_720p.

 

I will now look at your links.