topic Re: Picture display error in uboot in i.MX Processors

Picture display error in uboot

jimmyli — Fri, 18 Jun 2021 08:41:08 GMT

Chip: MIMX8MM6DVTLZAA

BSP: L5.4.70-2.3.0, uboot version is 2020.04

Dispplay: mipi to RGB by LT9211, referent driver has been modified and initialized.

Screen resolution: 1024*600，referent configuration has been checked OK.

Question:

In uboot stage, the screen displays as below.

From uboot to kernel, kernel will read the same frame buffer transmitted from uboot, the display is OK.

What is the reason for it, and how to fix ?

Thanks.

igorpadykov — Fri, 18 Jun 2021 11:42:32 GMT

Hi Jimmy

for that issue one can recheck mipi clocks as described on :

Best regards
igor

jimmyli — Mon, 21 Jun 2021 00:53:31 GMT

Hi Igor,

We will check again.

Thanks.

mesahin — Mon, 05 Jul 2021 11:57:43 GMT

Can you share reference driver LT9211 ?

Sincerely.