Subject: Which is better to specify console, "console= " or "stdout-path" ?

From: [email-masked] (Peter Hurley)
Date: Wed, 21 Oct 2015 08:46:09 -0400

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