linux-kernel - RE: [PATCH v2 1/7] QE: Add IC, SI and SIRAM document to device tree bindings.

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Date:	Thu, 25 Feb 2016 03:10:26 +0000
From:	Qiang Zhao <qiang.zhao@....com>
To:	Scott Wood <oss@...error.net>, Rob Herring <robh@...nel.org>
CC:	Yang-Leo Li <leoyang.li@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: RE: [PATCH v2 1/7] QE: Add IC, SI and SIRAM document to device tree
 bindings.

On Wed, 2016-02-24 at 04:20  AM, Scott Wood wrote:
> -----Original Message-----
> From: Scott Wood [mailto:oss@...error.net]
> Sent: Wednesday, February 24, 2016 4:20 AM
> To: Rob Herring <robh@...nel.org>; Qiang Zhao <qiang.zhao@....com>
> Cc: Yang-Leo Li <leoyang.li@....com>; linux-kernel@...r.kernel.org;
> devicetree@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org
> Subject: Re: [PATCH v2 1/7] QE: Add IC, SI and SIRAM document to device tree
> bindings.
> 
> On Tue, 2016-02-23 at 14:15 -0600, Rob Herring wrote:
> > On Thu, Feb 18, 2016 at 09:06:06AM +0800, Zhao Qiang wrote:
> > > Add IC, SI and SIRAM document of QE to
> > > Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt
> > >
> > > Signed-off-by: Zhao Qiang <qiang.zhao@....com>
> > > ---
> > > Changes for v2
> > > 	- Add interrupt-controller in Required properties
> > > 	- delete address-cells and size-cells for qe-si and qe-siram
> > >
> > >  .../devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt  | 50
> > > ++++++++++++++++++++++
> > >  1 file changed, 50 insertions(+)
> > >
> > > diff --git
> > > a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt
> > > b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt
> > > index 4f89302..84052a7 100644
> > > --- a/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt
> > > +++ b/Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/qe.txt
> > > @@ -69,6 +69,56 @@ Example:
> > >  	};
> > >       };
> > >
> > > +* Interrupt Controller (IC)
> > > +
> > > +Required properties:
> > > +- compatible : should be "fsl,qe-ic".
> >
> > > +- compatible : should be "fsl,qe-si".
> >
> > > +- compatible : should be "fsl,qe-siram".
> >
> > These compatible strings are all a bit generic and should have SoC
> > specific compatible strings.
> 
> I don't know about si/siram, but "fsl,qe-ic" has been around since 2008, so it
> should be documented even if a more specific compatible is also added.

Agree, and si/siram are also has been around since 2008.
In addition, I don’t think it is needed to add specific compatible, because they are
the same in qe-supported soc.

BR
-Zhao