From: n0ano@n0ano.com
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: donald.d.dugger@intel.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Enable console on PCI serial devices
Date: Thu, 16 Oct 2008 20:39:12 -0600 [thread overview]
Message-ID: <20081017023912.GA9378@xolotl.n0ano.com> (raw)
In-Reply-To: <200810161716.47620.bjorn.helgaas@hp.com>
On Thu, Oct 16, 2008 at 05:16:47PM -0600, Bjorn Helgaas wrote:
>...
> Did you play with "console=uart,io,0xe880,115200n8" at all?
>
> That gives you early serial console output and automatically switches
> to the matching ttyS device when it is discovered.
>
> "console=uart" doesn't have support for crystal frequency, but that
> could be added in drivers/serial/8250_early.c.
>
Yep, that was pointed out and my latest patch does just that, use the
`uart' syntax to specify I/O address and enhance it to control crystal
frequency.
We're arguing now about what to do about the `earlycon' and `earlyprintk'
parameters, I contend we should remove those as the `console=uart' is
a superset of their capabilities but there are some dissenting opinions.
--
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
n0ano@n0ano.com
Ph: 303/443-3786
next prev parent reply other threads:[~2008-10-17 2:39 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-14 22:31 donald.d.dugger
2008-10-14 22:39 ` Yinghai Lu
2008-10-14 23:30 ` n0ano
2008-10-15 9:13 ` Paul Bolle
2008-10-15 20:48 ` n0ano
2008-10-16 10:43 ` Paul Bolle
2008-10-16 16:23 ` Yinghai Lu
2008-10-16 17:12 ` n0ano
2008-10-16 18:19 ` Yinghai Lu
2008-10-16 18:25 ` n0ano
2008-10-16 18:30 ` Yinghai Lu
2008-10-16 18:57 ` n0ano
2008-10-17 2:45 ` n0ano
2008-10-17 3:32 ` Yinghai Lu
2008-10-17 16:05 ` n0ano
2008-10-17 17:01 ` Yinghai Lu
2008-10-14 22:53 ` Alan Cox
2008-10-14 23:04 ` n0ano
2008-10-16 23:16 ` Bjorn Helgaas
2008-10-17 2:39 ` n0ano [this message]
2008-10-17 9:28 ` Alan Cox
2008-10-17 14:11 ` n0ano
2008-10-17 14:46 ` Bjorn Helgaas
2008-10-17 15:36 ` n0ano
2008-10-17 16:39 ` Bjorn Helgaas
2008-10-17 17:06 ` n0ano
2008-10-20 16:44 ` Lennart Sorensen
2008-10-20 17:11 ` Bjorn Helgaas
2008-10-20 17:43 ` n0ano
2008-10-20 19:11 ` Bjorn Helgaas
2008-10-21 20:08 ` n0ano
2008-10-21 22:08 ` Bjorn Helgaas
2008-10-21 22:33 ` n0ano
2008-10-17 14:44 ` Bjorn Helgaas
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