The video parameters you can adjust via the video= kernel command line parameter are discussed in the kernel documentation:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/Documentation/fb/modedb.txt?id=v3.8.13 If your LCD is connected via HDMI, that should be enough to get it working. If you are directly connecting to the LCD via the RGB and sync signals and you need more exact control over the video timings, you should not use the HDMI driver. Instead, you'll want to disable the HDMI driver and use the tilcd driver via a custom device-tree overlay, like this example for a 7" 1024x600 panel with a resistive touch-screen: https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-BONE-LCD7-01-00A1.dts#L230 ...there are several other example LCD overlays in the same repository. On 6/18/2016 5:18 PM, epi kao wrote: > thanks, and yes i already knew this link. But there is only > explained how to read (for debug) the EDID infos. That is not > really usefull. I need more functions as only resolution and > refresh rate.... > > So it seems that with a raspberry i have more adjust functions to > set the hdmi output-timings? > > > Am Samstag, 18. Juni 2016 21:26:06 UTC+2 schrieb William Hermans: >> http://elinux.org/Beagleboard:BeagleBoneBlack_HDMI >> >> A lot of information on that link, maybe something there can help >> you out. >> >> >> >> On Sat, Jun 18, 2016 at 11:27 AM, epi kao <[email protected]> >> wrote: how you mean download? My several TFT's (7", 5" etc.) does >> not support EDID, so i must configure this directly in the bbb. >> But i really don't know where and how all this configuration can >> be done? With google i have found only manuals for the >> raspberry. >> >> thanks >> >> >> >> -- >> >> For more options, visit http://beagleboard.org/discuss >> >> --- >> >> You received this message because you are subscribed to the >> Google Groups "BeagleBoard" group. >> >> To unsubscribe from this group and stop receiving emails from it, >> send an email to [email protected]. >> >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/d637ad92-04c5-4837-9301-9b6b6f8d3334%40googlegroups.com. >> >> >> >> >> For more options, visit https://groups.google.com/d/optout. > -- Charles Steinkuehler [email protected] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/aad96827-edb9-2c97-1676-563272deaf2f%40steinkuehler.net. For more options, visit https://groups.google.com/d/optout.
