[PATCH 1/4] OF: Add helper for matching against linux, stdout-path

[Grant Likely]

On Thu, Nov 22, 2012 at 7:35 PM, Jean-Christophe PLAGNIOL-VILLARD
<plagnioj at jcrosoft.com> wrote:
> On 15:31 Thu 22 Nov     , Grant Likely wrote:
>> On Thu, 22 Nov 2012 06:41:38 +0100, Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com> wrote:
>> > On 18:03 Wed 21 Nov     , Grant Likely wrote:
>> > > On Wed, Nov 21, 2012 at 3:57 PM, Jean-Christophe PLAGNIOL-VILLARD
>> > > <plagnioj at jcrosoft.com> wrote:
>> > > > From: Sascha Hauer <s.hauer at pengutronix.de>
>> > > >
>> > > > devicetrees may have a linux,stdout-path or stdout-path property
>> > > > in the chosen node describing the console device. This adds a helper
>> > > > function to match a device against this property and retrieve the options
>> > > > so a driver can call add_preferred_console for a matching device.
>> > >
>> > > NIce. Looks like the right behaviour, but is a little inefficient.
>> > > Since the stdout property doesn't change this code could be called
>> > > once right after the tree is unflattened and then cache the pointer to
>> > > the node anarguments. Can you add the code to of_alias_scan()?
>> > do we assume that we can have only one stdout-path?
>> >
>> > I think we could have more serial, framebuffer console
>>
>> Nope. stdout-path as currently defined is only one device. Someone would
>> need to propose an extension for multiple stdout's before I'd bother
>> trying to support that.
> ok for this version I do not put it but I need it
>
> I want to have 2 console uart and framebuffer
>
> Personnaly I'd just allow multiple instance of stdout-path

Propose a binding extension.

g.