HOW CAN I SET DATA ENABLE TIMINGS IN OMAP DSS

Hi

I am trying to find a way how to set DATA_EN timings in OMAP DSS

I mean I want to send DATA_EN signal when I want to start

I guess there is a part to set DATA_EN in omapdss_dpi_display_enable function from OMAP DSS

But I Couldnt find those parts........

The reason that I do is that  DATA_EN signal in my display timing starts from some delay after its power is up

So I thought I should modify omapdss_dpi_display_enable source to add delay in linux driver source

this is display datasheet: https://www.dropbox.com/s/ixpws4qzo3ttj6e/SVGA050.pdf?dl=0 

I am writing power-up sequence in datasheet

Thanks In advance your help