AnsweredAssumed Answered

Gitter in pixel clock for VGA display in i.MX6 linux BSP

Question asked by Misbah Khan on Mar 26, 2015
Latest reply on Apr 7, 2015 by Yuri Muhin

Hello All,

 

We are using RGB to VGA display in our product with i.MX6

We have a VGA display and we are using linux 3.0.35 kernel

 

The issue that we are facing is that when the display's mode is set to 800*600 or

800*480 using the VESA timing parameters the pixel clock is set to 40Mhz

 

We can see that there is a gitter in the clock.

 

clk_set_parent(&ipu1_clk, &pll3_pfd_540M);

 

Can any one tell us why there is gitter when set to 40Mhz ?

 

40Mz is a standard clock that can be set, this is leading to the issue of picture on the display getting Blur effect.

 

This is very critical for us kindly help

 

Regards,

Misbah

Outcomes