From: peter@hurleysoftware.com (Peter Hurley)
To: linux-arm-kernel@lists.infradead.org
Subject: Which is better to specify console, "console= " or "stdout-path" ?
Date: Wed, 21 Oct 2015 08:46:09 -0400 [thread overview]
Message-ID: <56278911.9050704@hurleysoftware.com> (raw)
In-Reply-To: <562753A6.3070107@arm.com>
On 10/21/2015 04:58 AM, Sudeep Holla wrote:
> On 21/10/15 06:09, Masahiro Yamada wrote:
>> I think there exist two ways to specify the console port and baudrate.
>>
>>
>> [1] Specify console in bootargs
>>
>> chosen {
>> bootargs = "console=ttyS0,115200";
>> };
>>
>>
>> [2] Specify stdout-path
>>
>> chosen {
>> stdout-path = "serial0:115200n8";
>
> This will work for even early/boot console, so this is better than
> option [1]
Be aware that options specified via /chosen/stdout-path are
currently ignored by earlycon. There were some hiccups getting the
initial support upstream; when 4.4 hits mainline, I'll resubmit
my series that implements the of_serial i/o properties and
options passthrough to earlycon setup.
Regards,
Peter Hurley
next prev parent reply other threads:[~2015-10-21 12:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-21 5:09 Which is better to specify console, "console= " or "stdout-path" ? Masahiro Yamada
2015-10-21 7:43 ` Arnd Bergmann
2015-10-21 8:58 ` Sudeep Holla
2015-10-21 12:46 ` Peter Hurley [this message]
2015-10-21 12:54 ` Sudeep Holla
2015-10-21 13:02 ` Peter Hurley
2015-10-21 13:06 ` Sudeep Holla
2015-10-21 15:38 ` Masahiro Yamada
2015-10-21 16:26 ` Peter Hurley
2015-10-22 4:20 ` Masahiro Yamada
2015-10-28 16:00 ` Peter Hurley
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