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SubjectRe: [PATCH v2 1/7] QE: Add IC, SI and SIRAM document to device tree bindings.
On Thu, 2016-02-25 at 03:10 +0000, Qiang Zhao wrote:
> On Wed, 2016-02-24 at 04:20 AM, Scott Wood wrote:
> > -----Original Message-----
> > From: Scott Wood [mailto:oss@buserror.net]
> > Sent: Wednesday, February 24, 2016 4:20 AM
> > To: Rob Herring <robh@kernel.org>; Qiang Zhao <qiang.zhao@nxp.com>
> > Cc: Yang-Leo Li <leoyang.li@nxp.com>; linux-kernel@vger.kernel.org;
> > devicetree@vger.kernel.org; linuxppc-dev@lists.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@nxp.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.

Where? I couldn't find them when grepping.

> In addition, I don’t think it is needed to add specific compatible, because
> they are
> the same in qe-supported soc.

How do we know that they are 100% the same?

-Scott
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