How to keep logo from uboot to kernel for imx8mp

[Rayn_Jang]

Hi, 

I want to know how to keep UBoot logo on imx8mp until android animation.

The BSP version uses Android 11.0.0_2.6.0.

who can help?

[bettychen]

I have the same question,do you resolve it?
Thanks.

[Dhruvit]

Hi @Rayn_Jang,

I hope you are doing well.

To keep the u-boot logo from u-boot to kernel one can refer to the below-mentioned document.

Patch to support uboot logo keep from uboot to kernel for NXP Linux and Android BSP (HDMI, LCD, and ...

Please provide more information regarding the display for further support.

Thanks & Regards,
Dhruvit Vasavada

[Rayn_Jang]

Hi, Dhruvit

I have already checked the link information you provided above.

The information you provided cannot be applied as BSP information for imx6.

I am using BSP for imx8mp.

Display information uses mipi-dsi interface and uses rm67295 panel.

Currently, the logo is displayed normally in Uboot.

Thanks

[Dhruvit]

Hi @Rayn_Jang,

I hope you are doing well.

Implementation will be similar to the given post.

Please refer to the below-mentioned thread, where a similar implementation is done on i.MX8MN.

https://community.nxp.com/t5/i-MX-Processors/Support-U-Boot-splash-screen-to-kernel-in-imx8MP-for-Li...

Please try referring to the patches mentioned in the above link.

Thanks & Regards,
Dhruvit Vasavada

[Rayn_Jang]

Hi, Dhruvit

thank you for your answer.

I applied the patch previously by referencing the link mentioned above.
However, the symptoms are the same.

Please help me.

Thanks

[Dhruvit]

Hi @Rayn_Jang,

I hope you are doing well.

Please share the patch that you applied.

The above patch is for i.mx8mn and a different kernel version, you might need to change it for i.mx8mp.

Thanks & regards,
Dhruvit Vasavada

[Rayn_Jang]

Hi, Dhruvit 

Please refer to the attachment you requested.

Here's what I patched and fixed.

The boot logo is displayed normally, but when a breakpoint is set in start_kernel, the boot logo is turned off.

I skipped the missing part while applying the patch file.

[Dhruvit]

Hi @Rayn_Jang,

I hope you are doing well.

Did you apply the third patch u-boot_0002.patch provided in previous link?

sec_mipi_dsim.c is moved to /drivers/video/nxp/imx in the latest u-boot-imx

Thanks & Regards,
Dhruvit Vasavada

[Rayn_Jang]

Hi, Dhruvit 

I also applied the u-boot_0002.patch file, but it didn't work so I deleted it.

[Dhruvit]

Hi @Rayn_Jang,

I hope you are doing well.

Could you please share debug logs for further debugging?

Thanks & Regards,
Dhruvit Vasavada

[Rayn_Jang]

Hi, Dhruvit 

I attach the debug log you requested.

The boot logo is displayed normally, but when a breakpoint is set in start_kernel, the boot logo is turned off.

There is also a problem with rebooting after applying the patch.

[disennn]

Hi,
Did you manage to keep logo from uboot to kernel already?

[Rayn_Jang]

It hasn't been resolved yet.