Re: [RFC][PATCH] Xilinx uartlite serial driver

Peter Korsgaard wrote:
> > > > > > "David" == David H Lynch <dhlii@xxxxxxxxxx> writes:
> > > > > >             
>
> Hi,
>
>
>  David> Also there is no provision for running the UartLite without
>  David> using interrupts.  The Pico E12/E14 frequently use FPGA
>  David> firmare that does not include a PIC.  Some implimentations of
>  David> the UartLite use dcr instead of memory mapped ports.
>    
> No - again like the early serial stuff that's something that can be
> added once the base driver is mainlined if there's demand.
>
> Does polling even work decently with the small fifo size of the
> uartlite?
>
>   
    I do not care about DCR,  but as the responsible party for the only
board I am aware of that does use the uartlite as its
    primary serial device, which typically does not have interrupt
support, that is something I care about alot.

    You can poll a serial port on an 8080 running 1Mhz with a serial
port with no fifo.
    16 bytes on a 300Mhz PPC is heaven. Works fine at 115K baud.



--
Dave Lynch                                                  DLA Systems
Software Development:                                    Embedded Linux
717.627.3770           dhlii@xxxxxxxxxx           http://www.dlasys.net
fax: 1.253.369.9244                                Cell: 1.717.587.7774
Over 25 years' experience in platforms, languages, and technologies too 
numerous to list.

"Any intelligent fool can make things bigger and more complex... It 
takes a touch of genius - and a lot of courage to move in the opposite 
direction."
Albert Einstein
-
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html