7 ms·
I was curious about this as well. The issue appears to be lack of scatter-gather support. See: https://github.com/raspberrypi/linux/issues/875#issuecomment-48
by kevinoid 6y ago
I was curious about this as well. The issue appears to be lack of scatter-gather support. See: https://github.com/raspberrypi/linux/issues/875#issuecomment-482533041 https://github.com/raspberrypi/linux/issues/875#issuecomment...
- dmitrygr 6y agowhich is not required to implement any usb protocol. one can easily use normal DMA and still get a speed gain. since the bottleneck is not CPU, making it work a bit harder putting together those DMA descriptors is worth it.