topic Imx93 debugging lvds screen in i.MX Processors

Imx93 debugging lvds screen

xiang_1001 — Thu, 24 Oct 2024 09:37:42 GMT

The lvds screen is being debugged, the lvds screen is not bright, and there is no signal from the oscilloscope test. There is an error in reading the log. Excuse me, what is the problem?
The device tree configuration is shown in the figure.

Re: Imx93 debugging lvds screen

Zhiming_Liu — Fri, 25 Oct 2024 02:40:41 GMT

Please restore the original file and re-modify it step by step to troubleshoot which step of the modification went wrong.

Best Regards
Zhiming

Re: Imx93 debugging lvds screen

xiang_1001 — Fri, 25 Oct 2024 09:35:17 GMT

There are two "fsl,imx93-ldb" in the driver. Turn on CONFIG_DRM_FSL_LDB=y and turn off CONFIG_DRM_IMX93_LDB=n, and the error will be gone.
But this 1280*800 lvds screen is still not lit.

Re: Imx93 debugging lvds screen

Zhiming_Liu — Mon, 28 Oct 2024 06:23:09 GMT

You have modified too many things to be able to determine where the problem is, my suggestion is still to restore the original code and modify it step by step to determine where the problem is, as for the ldb driver problem you mentioned, the normal driver file should be the driver corresponding to CONFIG_DRM_IMX93_LDB

Best Regards
Zhiming