Confirmation Request for HDMI 1280x800 Resolution Support on i.MX8MQ

[charleshuang]

Hi NXP

Our Japanese customer feedback question.

Could you please help check if we can assist the customer in supporting this resolution?
Previously, on the i.MX8MP, we were able to support this resolution by adding this clock in the kernel's PHY.
Can the same method be applied to the ROM-5720 MX8M platform?
Reference: Solved: IMX8M plus 1280*800 resolution - NXP Community

https://community.nxp.com/t5/i-MX-Processors/IMX8M-plus-1280-800-resolution/m-p/1732918

Thanks.

[joanxie]

I already replied to you in your another case, did you receive it? do you mind reading it and tell me what do you need further? imx8mq has different hdmi IP from imx8mp, imx8mq needs to use tools to calculate the timings, pls check my mail again

[charleshuang]

Hi  @joanxie 

Do you mean you've already replied to the question?

Could you please share the link?"

On community or support tickets?  

Thanks.

[joanxie]

ok, I post here again

current driver already supported 1280x800 resolution, you can find them in the function drm_dmt_modes in the drm_edid.c as below

https://github.com/nxp-imx/linux-imx/blob/lf-6.12.y/drivers/gpu/drm/drm_edid.c

if customer display couldn't be supported, maybe their timing couldn't be supported in the current driver, if they need add new timing, they need to use tools to generate timings, then add them in the current driver, more detailed information, pls refer to the link as below

https://community.nxp.com/t5/i-MX-Processors/HDMI-DRM-custom-resolution-and-clock-frequency/m-p/1029...