Hi,
I am working on a Xavier AGX devkit flashed with L4T 32.5 and Jetpack 4.5.
I am trying to connect multiple 4k display to the board, The display which I connected via HDMi cable is working on a resolution of 3840x2160p 60Hz where as the display I connected using hdmi to type-c converter has a supported resolution of 3840x2160p 30Hz. (I have used same display)
Why is this difference in frame rate? What is the maximum supported resolution by the board?
Please go to kernel/nvidia/drivers/video/tegra/dc/dp.c
and check below function.
tegra_dp_mode_filter
This function will read mode list from your monitor and check it one by one. If that mode is accpected, it will pass all the condition and get return true in the end.
Thus, if 4k@60 mode is gone, you should check which condition returns false.