Do we have people interested in device tree janitoring / cleanup?

Jason Cooper jason at
Wed Jul 24 15:03:15 EDT 2013

On Wed, Jul 24, 2013 at 01:31:00PM -0500, Rob Herring wrote:
> On 07/24/2013 10:27 AM, Olof Johansson wrote:
> > Every now and then I come across a binding that's just done Wrong(tm),
> > merged through a submaintainer tree and hasn't seen proper review --
> > if it had, it wouldn't look the way it does. It's something we're
> > starting to address now since there's more people stepping up to be
> > maintainers, but there's a backlog of bad bindings already merged.
> > 
> > Often they are produced by translating the platform_data structures
> > directly over into device-tree properties without consideration to
> > describing the hardware or usual conventions, using key/value pairs
> > instead of boolean properties, etc.
> > 
> > Getting involved in cleaning up these kind of bindings is a great way
> > to learn "the ways of device tree" for someone that has interest in
> > that.
> > 
> > Latest find in this area is the Maxim 8925 bindings, that I came
> > across since they caused a compile warning on some defconfig. I'll
> > post a patch to address the warning but if someone else feels like
> > fixing the bindings on top of it that would be appreciated!
> Are they documented typically? Can we at a minimum update the
> documentation with a big fat warning to not use or propagate the crap.
> Or move the binding doc file to a fixme directory.

I agree, in order to do the janitorial work (which I'm not opposed to
helping with), we need a way to mark stable bindings.

fwiw, we could do a separate commit (like the kernel version commit)
where the only change is marking a binding as stable, and is obvious
from a 'git log --oneline'. eg:


>From 65c069678cdbd5aaa6aca0d4062dab6eb9f9904c Mon Sep 17 00:00:00 2001
From: Jason Cooper <jason at>
Date: Wed, 24 Jul 2013 18:49:28 +0000
Subject: [PATCH] DT: binding: stable: gpio-regulator

A whole bunch of folks reviewed this and think it kicks ass.

List-of-people-responsible-for-this-travesty: ...
Signed-off-by: Jason Cooper <jason at>
 Documentation/devicetree/bindings/regulator/gpio-regulator.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
index 63c6598..35ec635 100644
--- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
@@ -1,3 +1,5 @@
+Binding status: Stable
 GPIO controlled regulators
 Required properties:

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