lkml.org 
[lkml]   [2005]   [Mar]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [UART] 8250:RTS/CTS flow control issue.

--- Russell King <rmk+lkml@arm.linux.org.uk> wrote:
> If you want it to be immediate, then I'm afraid
> you're going to have a
> relatively hard time, with compatibility problems
> with various systems.
> You can't really dictate to people that they must
> turn off the FIFOs on
> their UARTs for your product to work. (Well, you
> can, but _you_ would
> have to support them.)
>

well, I don't specially wan't to be immediate.
My hardware has "auto flow control" and a 8 bytes
fifo...So *whatever* the trigger level is for RTS
(actually I can't tune it), I will overrun because
the end *driver*, which should be aware of the lack of
its "hw auto flow control", decides to fill up its tx
fifo to 8 bytes when transmiting...

One other solution may be to give the possibility of
the user to tune the size of tx fifo ?

thanks

Francis






Découvrez nos promotions exclusives "destination de la Tunisie, du Maroc, des Baléares et la Rép. Dominicaine sur Yahoo! Voyages :
http://fr.travel.yahoo.com/promotions/mar14.html
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:11    [W:0.029 / U:0.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site