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Can OMAP select display with TV and LCD simultaneously？

kevin Guo12526
Intellectual 470 points

According to the specification of display subsystem, they do not exclude each other. However, the Linux BSP can be configured to display with either TV or LCD.

 

Thanks

Kevin

  • 0
    TI__Mastermind 41665 points

    This is certainly possible from a hardware perspective, though I am not sure if the latest Linux drivers really support this or not, the last time I tried this was with the earlier 1.x SDK release and I recall it at least partially working where you could have the GFX pipe driving the LCD and the video pipe driving the TV output, you could configure the outputs with sysfs entries and just had to route the GFX and video pipes to the different output interfaces.

    For a more current release there are sysfs entries in OMAP35x-PSP-SDK-02.01.03.11\docs\MigrationGuide-02.01.03.11.pdf that may be of some help in this case, in particular it seems you can still configure particular display windows/planes to different physical display outputs, for example section 1.1.9.4.5 shows switching Vid1 from LCD to TV output, in theory this should leave the GFX plane on the LCD.