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AM3517 DSS initialization

Diego Chaverri
Intellectual 275 points
Other Parts Discussed in Thread: AM3517

Hi:

I'm working on a project using AM3517 EVM board. I'm supposed to get a u-boot splash screen and then perform a "soft" transition once the kernel boots (meaning that display subsystem should not be reinitialized and the image should remain on screen). Right now I'm struggling to find a way of keeping several things: 1) the pixel clock alive so I must find a way the DPLL4 not the be reseted 2) keep the frame buffer untouched so the image remains on screen.

I have not found a way of keeping the LCD display on, even after disabling the DSS and frame buffer (just to make sure that neither of these is the one that causes the screen to go black) I stil can see that some part of the kernel boot is resetting the display and so removing my splash screen.

Any help would be appreciated.

Thanks

Diego Chaverri