linux-kernel - Re: [PATCH v4 04/18] dt-bindings: syscon: Add DT bindings documentation for Allwinner syscon

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Message-ID: <20170420065053.GA28021@Red>
Date:   Thu, 20 Apr 2017 08:50:53 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     André Przywara <andre.przywara@....com>
Cc:     robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, catalin.marinas@....com,
        will.deacon@....com, peppe.cavallaro@...com,
        alexandre.torgue@...com, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 04/18] dt-bindings: syscon: Add DT bindings
 documentation for Allwinner syscon

On Thu, Apr 20, 2017 at 12:38:50AM +0100, André Przywara wrote:
> On 12/04/17 12:13, Corentin Labbe wrote:
> > This patch adds documentation for Device-Tree bindings for the
> > syscon present in allwinner devices.
> > 
> > Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> > ---
> >  .../devicetree/bindings/misc/allwinner,syscon.txt     | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/misc/allwinner,syscon.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/misc/allwinner,syscon.txt b/Documentation/devicetree/bindings/misc/allwinner,syscon.txt
> > new file mode 100644
> > index 0000000..c056c5b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/misc/allwinner,syscon.txt
> > @@ -0,0 +1,19 @@
> > +* Allwinner sun8i system controller
> > +
> > +This file describes the bindings for the system controller present in
> > +Allwinner SoC H3, A83T and A64.
> > +The principal function of this syscon is to control EMAC PHY choice and
> > +config.
> > +
> > +Required properties for the system controller:
> > +- reg: address and length of the register for the device.
> > +- compatible: should be "syscon" and one of the following string:
> > +		"allwinner,sun8i-h3-system-controller"
> > +		"allwinner,sun8i-a64-system-controller"
> 
> While sun8i might make some sense technically, all 64-bit sunxi
> compatible strings use the sun50i prefix to follow the Allwinner naming.
> So this should read:
> 		"allwinner,sun50i-a64-system-controller"
> 
> Also I am wondering if we should add a compatible string for the H5
> (support for that SoC is in -next already):
> 		"allwinner,sun50i-h5-system-controller"
> 
> Cheers,
> Andre.
> 

I agree with sun50i-a64-system-controller, the sun8i-a64 is a copy/paste error.
I will add sun50i-h5-system-controller since all xxx-system-controller are just hypothetic compatible.

Thanks
Regards