No. 1920x1080 at 24HZ is the best the HW can support inside the processor. Gerald
On Tue, Nov 17, 2015 at 8:39 AM, CEinTX <[email protected]> wrote: > It does not have anything to do with the HDMI chip either. It is quite > capable of handling 1080p @ 60 Hz. > The problem, according to other threads is that the LCD clock cannot work > at the needed ~150Mhz needed for that interface. > The other issue is that since memory is a 16-bit interface, bandwidth > becomes an issue as well. > We have run the interface at 1080p @ 24 & 30 Hz without too much issue as > these only need a ~74Mhz clk. > We have also done 1360x768 @ 60 Hz with an 85Mhz clk. > We have not been able to figure out how to do 1080i as the LCD controller > does not appear to have native support for interlacing. > Manually doing that would be a real pain. Might as well use the 24 or 30 > Hz - essentially the same as far a bandwidth. > > So bare metal or not, by all accounts, you are not going to get 1080p @ 60 > Hz. > > Hope that helps, > Matt > > > On Tuesday, November 17, 2015 at 2:05:14 AM UTC-6, Karl Karpfen wrote: >> >> I think it does not has anything to do with bare metal >> programming/available computing power but with the HDMI chip. According to >> http://elinux.org/Beagleboard:BeagleBoneBlack_HDMI#Supported_Resolutions >> 1920x1080@60 Hz is not possible. >> >> Am Samstag, 14. November 2015 14:35:23 UTC+1 schrieb fox lin: >>> >>> Deay Guys: >>> >>> These days, I encounter a struggle question which is in BBB bare metal >>> display! >>> >>> Following are my condition and question: >>> >>> 1. I design a raster display for mobile LCM which work in 800x1200@60Hz. >>> (In bare metal) >>> --> I use TTL 24Bits (RGB) + Hsync + Vsync + PCLK + DE for display >>> timing. >>> --> I write several pattern on the LCM and it works normally. >>> >>> 2. Today, I got a 1080x1920 LCM and just want to light on it. But the >>> screen is abnormal. >>> But I reduce the resolution to 960x1920 and display is success! >>> >>> 3. Is that the DMA size mis-match? If is so...How to modify it? Some >>> body could guide to me? >>> or >>> BBB NOT support resolution which exceed 960x1920? >>> >>> Have a nice day~ >>> >>> >>> -- > 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]. > For more options, visit https://groups.google.com/d/optout. > -- Gerald [email protected] http://beagleboard.org/ -- 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]. For more options, visit https://groups.google.com/d/optout.
