lkml.org 
[lkml]   [2014]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[RFC 0/5] of: Automatic console registration cleanups
Date
Hi all,

This is a series that I've been playing with over the last few days to
clean up the selection of default console devices when using the device
tree. The device tree defines a way of specifying the console by using a
"stdout-path" property in the /chosen node, but very few drivers
actually attempt to use that data, and so for most platforms there needs
to be a "console=" line in the command line if a serial port is intended
to be used as the console.

With this series, if there is a /chosen/stdout-path property, and if
that property points to a serial port node, then when the serial driver
registers the port, the core uart_add_one_port() function will notice
and if no console= argument was provided then add it as a preferred
console.

I've not tested this very extensively yet, but I want to get some
feedback before I go further.

The one downside with this approach is that it doesn't do anything for
early console setup. That still needs to be added on a per-driver basis,
but at least it shouldn't conflict with this approach.



\
 
 \ /
  Last update: 2014-03-28 17:41    [W:0.153 / U:0.832 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site