i.MX ProcessorsのトピックRe: Connect a LCD screen over MIPI DSI

Connect a LCD screen over MIPI DSI

bozhidar — Fri, 08 Mar 2019 14:10:26 GMT

Hi,
I want to connect a LCD screen over MIPI DSI to the board var-som-imx6. I'm running the yocto-sumo kernel on my board.
So far, everything is connected but I'm not getting any data on the screen.
What configuration I need to do and what drivers I have to install? I couldn't find any useful information.

Thanks in advance.

Re: Connect a LCD screen over MIPI DSI

igorpadykov — Fri, 08 Mar 2019 23:28:17 GMT

Hi Bozhidar

one can try suggestions provided on

support new MIPI DSI panel

linux-imx/mxcfb_hx8363_wvga.c at imx_4.14.78_1.0.0_ga_var01 · varigit/linux-imx · GitHub

Best regards
igor
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Re: Connect a LCD screen over MIPI DSI

bozhidar — Mon, 11 Mar 2019 15:07:17 GMT

Hi Igor,

Thanks for your answer. I've checked the links you sent me. However I have a few more questions.

1) I see that I have to change the device tree file. I can't locate that file. Is it located on the var-som board or inside the folder/source code of the yocto project?

2) After changing the device tree file, what do I do? Do I have to re-compile the kernel? Or I have to just put it in some config folder?

3)I see that another option is to change the source code of an existing driver(this one: linux-imx/mxcfb_hx8363_wvga.c at imx_4.14.78_1.0.0_ga_var01 · varigit/linux-imx · GitHub ).

Now, is it necessary to change the driver? Isn't the device tree config file enough?

After the driver is changed, how do I compile it to apply the changes? I guess I have to compile the entire kernel image, right?

Thanks.

MIPI DSI display problems

Re: Connect a LCD screen over MIPI DSI

igorpadykov — Tue, 12 Mar 2019 04:49:07 GMT

Hi Bozhidar

one can look at overview of variscite software on

Android Platform Customization - Variscite Wiki

for questions related to var-som board and its software suggest to

contact vendor of that board, variscite support

Variscite Wiki

Best regards
igor