Picture display error in uboot

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Picture display error in uboot

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jimmyli
Contributor IV

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*600referent 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.

jimmyli_0-1624005608580.png

 

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3 Replies

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igorpadykov
NXP Employee
NXP Employee

Hi Jimmy

 

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

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Setting-i-MX8M-Mini-and-Nano-MIPI-DPHY-C...

 

Best regards
igor

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jimmyli
Contributor IV

Hi Igor,

      We will check again.

      Thanks.

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mesahin
Contributor I

Hello jimmyli,

Can you share  reference driver LT9211 ?

Sincerely.

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