LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Rob Prowel <prowel@kuchera.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: questions about 8250 uart support for adhoc boards
Date: Fri, 23 Feb 2007 20:21:16 +0000	[thread overview]
Message-ID: <20070223202116.GA3000@flint.arm.linux.org.uk> (raw)
In-Reply-To: <45DF1EEC.4040602@kuchera.com>

On Fri, Feb 23, 2007 at 12:05:48PM -0500, Rob Prowel wrote:
> At least now, with fourport compiled into the kernel,

You don't even need to do that.  Just configure SERIAL_8250_NR_UARTS
and SERIAL_8250_RUNTIME_UARTS appropriately for your system.  There's
absolutely no need to build any of the additional modules.

> I can use 
> setserial to see the uarts and correctly identify them...but the shared 
> interrupt vector doesn't seem to work.  I haven't even attempted yet to 
> try stty or echoing data our to an o-scope.

I dropped support for the shared interrupt vector - having multiple
different ISRs depending on the way the wind was blowing was extremely
complex, and in this day and age of GHz CPUs rather silly.

The serial driver can still share interrupts just fine.  Just omit
configuring the multiport address and masks.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:

  reply	other threads:[~2007-02-23 20:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-23 17:05 questions about 8250 uart support for adhoc boards Rob Prowel
2007-02-23 20:21 ` Russell King [this message]
2007-02-23 20:48   ` Rob Prowel
2007-02-24 20:34     ` Stuart MacDonald
2007-02-26 17:02       ` Rob Prowel
2007-02-26 18:05         ` Russell King
2007-02-27 14:24           ` Rob Prowel
2007-02-27 17:38             ` Russell King
2007-02-27 19:06               ` Stuart MacDonald
2007-02-27 20:40                 ` Rob Prowel
2007-03-08 15:16                   ` Russell King

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20070223202116.GA3000@flint.arm.linux.org.uk \
    --to=rmk+lkml@arm.linux.org.uk \
    --cc=linux-kernel@vger.kernel.org \
    --cc=prowel@kuchera.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).