On Fri, 2011-05-13 at 16:14 +0530, Archit Taneja wrote: > Hi, > > On Friday 13 May 2011 12:46 AM, Juha Kuikka wrote: > > Hello, > > > > I was wondering if it would be possible to run DPI and DSI interfaces > > simultaneously with OMAP3 (DM3730). > > > > Limitations: > > - DSI would have to be in video mode (data to DSI phy through video > > port with H/VSYNC signaling, OMAP_DSS_PARALLELMODE_BYPASS) > > - DSI PLL would need to be used for clock source > > - Both the DPI and DSI panels would have to accept identical clocking > > (PCLK, blanking intervals etc). > > - Data lane # must match. > > - And of course same data would go to both > > > > I realize the current SW does not support this, but I'm more wondering > > if it is possible from the HW point of view because it seems to me > > that data out from DISPC is pretty much identical in both cases. > > I don't think this is possible on OMAP3, there is one LCD manager in > OMAP3 which can either feed pixels to DPI or DSI. > > The only way you could run 2 panels is by routing LCD manager's content > to DPI, and use DSI's capability to do a system DMA directly and send > the data to the panel(bypassing DISPC), I don't think the system DMA > method will work with a video mode panel, only command mode panels will > do here. Yes, that is correct. DPI + DSI command mode would work, although in that case the DSI panel would be driven by CPU or sDMA, both of which are not very good at the job. Tomi -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
