Screen Update Slow about gratis HOT 2 CLOSED

Looks like it did have to do with the fact that the DMA over spi was disabled on my system. I will assume that others have not seen this issue due to the fact that I believe for the 4.x kernels we are using the bone-universal overlay and it must set up the spi0 hardware in the correct manor. I am using the EPD with a CryptoCape and I think the crypto is loading the BB-SPIDEV0-00A0 overlay, which I found from this thread ( http://beagleboard.org/Community/Forums?place=msg%2Fbeagleboard%2F_22bW7vMkW0%2F16mBP2faAQAJ ) was edited to not allow DMA transfers by adding the line

ti,pio-mode;

apparently in the 4.1 kernel that RCN is working on there was a bug that crashed the system when DMA kicked in. so for S & giggles I decided to decompile that overlay and recompile it with that line removed and I'm writing the screen @ speed :)

I still don't know what pio stands for but some other day I can figure that out.

hopefully this might help someone out like me who is still working wading their way around these systems on the BBB, Thank you for all your hard work on this project!

from gratis.

most likely it is polled input/output so it would be slow.

from gratis.