From: David Gibson <david@gibson.dropbear.id.au>
To: Timur Tabi <timur@freescale.com>
Cc: linuxppc-dev@ozlabs.org, Arnd Bergmann <arnd@arndb.de>
Subject: Re: Could the DTS experts look at this?
Date: Tue, 12 Feb 2008 10:54:09 +1100 [thread overview]
Message-ID: <20080211235409.GB18348@localhost.localdomain> (raw)
In-Reply-To: <47B08C76.3000009@freescale.com>
On Mon, Feb 11, 2008 at 11:57:10AM -0600, Timur Tabi wrote:
> Arnd Bergmann wrote:
>
> > Maybe we can introduce a more generic way of having conditional
> > device nodes in the tree that get knocked out in the boot wrapper.
>
> I've been thinking about doing just this for quite some time now. I've had a
> few informal discussions without people about.
>
> One idea is to allow attaching simple conditional expressions (like
> X is <, =, or > than Y) to a node. It is the responsibility of the
> code that parses the device tree to assign values to X and Y. For
> instance, they could be the names of U-Boot environment variables.
> If the expression is false, then the node is removed (or ignored)
> from the device tree. If it's true, then it's kept in.
In the binary tree representation itself? No way.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
next prev parent reply other threads:[~2008-02-11 23:54 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-08 23:30 Could the DTS experts look at this? Sean MacLennan
2008-02-10 5:47 ` Arnd Bergmann
2008-02-10 6:05 ` Sean MacLennan
2008-02-11 17:57 ` Timur Tabi
2008-02-11 23:54 ` David Gibson [this message]
2008-02-11 23:56 ` David Gibson
2008-02-12 0:21 ` Arnd Bergmann
2008-02-12 0:36 ` David Gibson
2008-02-12 18:51 ` Scott Wood
2008-02-12 23:17 ` David Gibson
2008-02-12 23:41 ` Timur Tabi
2008-02-12 23:50 ` David Gibson
2008-02-12 15:44 ` Timur Tabi
2008-02-12 18:58 ` Grant Likely
2008-02-12 19:08 ` Timur Tabi
2008-02-12 19:34 ` Grant Likely
2008-02-12 19:45 ` Timur Tabi
2008-02-12 20:43 ` Grant Likely
2008-02-12 23:35 ` David Gibson
2008-02-12 23:50 ` Timur Tabi
2008-02-13 0:10 ` Grant Likely
2008-02-12 23:26 ` David Gibson
2008-02-12 23:47 ` Timur Tabi
2008-02-13 0:08 ` David Gibson
2008-02-13 0:15 ` Grant Likely
2008-02-12 23:21 ` David Gibson
2008-02-11 0:14 ` David Gibson
2008-02-11 2:40 ` Sean MacLennan
2008-02-11 3:11 ` David Gibson
2008-02-11 3:49 ` Sean MacLennan
2008-02-11 23:59 ` David Gibson
2008-02-12 1:07 ` Sean MacLennan
2008-02-12 0:20 ` David Gibson
2008-02-12 0:41 ` Sean MacLennan
2008-02-12 0:48 ` David Gibson
2008-02-12 18:52 ` Scott Wood
2008-02-12 19:03 ` Grant Likely
2008-02-12 19:10 ` Scott Wood
2008-02-17 10:22 ` David Woodhouse
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