[EMAIL PROTECTED] wrote:
> However, linux is not yet ready for such speeds, you can't have efficient
> communications at 1M2288bps with present parameter timings. I hope something
> will be done about this? I'm talking about at least milisecond resolution, even
> present speeds here at the gateway I'm responsible for (38k4bps links) suffer
> from 0.1 sec resolution. We're planning to use 1M2 links in the near future,
> and there are some "quick and dirty" solutions but it would be nice to have a
> full and solid implementation.
A PI2 (equipped with an ESCC) and the dmascc driver should do fine. The
granularity of the timing parameters currently is 1/25600Hz=39.1us.
In the current version (as of 2.2.0-pre6), you probably have to hack WR7'
to enable the TX FIFO in case of DMA - otherwise you would have a few TX
underruns at 1.2Mbps. I'm working on a minor update including this change.
-Klaus OE1KIB
