Hi,

On Thu, Aug 21, 2014 at 11:41:17PM +0200, Frans Klaver wrote:

On Wed, Aug 20, 2014 at 11:06:05AM -0500, Felipe Balbi wrote:

quoted

On Wed, Aug 20, 2014 at 08:40:28AM +0200, Frans Klaver wrote:

quoted

On Tue, Aug 19, 2014 at 01:57:02PM -0500, Felipe Balbi wrote:

quoted

On Tue, Aug 19, 2014 at 02:14:47PM +0200, Frans Klaver wrote:

quoted

At 3.6Mbaud, with slightly over 2Mbit/s data coming in, we see 1600 uart
rx buffer overflows within 30 seconds. Threading the interrupt handling reduces
this to about 170 overflows in 10 minutes.

Can you try Sebastian Siewior's patches for 8250_omap and 8250 dma
support ? That should help you a lot.

I'll have a look at that series. Thanks for pointing it out.

I have had a look at Sebastian's series, but I'm not convinced
yet that we should use it. So far the serial console seems to be
missing data every now and then. I haven't gotten around to testing our
high traffic application yet.

as any new driver, there are bugs to be fixed. How about reporting the
ones you found together with a way of reproducing them so they can be
fixed ?

cheers

-- 
balbi