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Linux/AM5718: Display timings setting

Part Number: AM5718

Tool/software: Linux

Hi,

We have developed a custom board with AM5718 Processor, and we are using an LVDS based panel. Display was working fine but it is not very clear, color was fine but image was moving. I suspect mainly timings for this panel.

root@BU6_DDU2:~# fbset

mode "800x600"
    geometry 800 600 800 600 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,8/24
endmode

I have another sbc board(not TI) , with the same panel and it's display is good.It's parameters are:

mode "800x600-60"
    # D: 38.251 MHz, H: 37.355 kHz, V: 59.863 Hz
    geometry 800 600 832 640 16
    timings 26143 112 32 17 3 80 4
    vsync high
    rgba 5/11,6/5,5/0,0/0
endmode

I want to set the above parameters to know , whether it is any timing issue or else hardware issue. How to modify the above timings, I have tried

root@BU6_DDU2:~# fbset -fb /dev/fb0 -g 800 600 832 640 16
ioctl FBIOPUT_VSCREENINFO: Invalid argument

How to modify?

Best Regards,

Ganesh