linux-kernel - Re: [PATCH] ARM: dts: s3c: Fix DTC unit name warnings in S3C2416 and S3C6410

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Date:	Sun, 3 Apr 2016 12:53:02 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Joachim Eastwood <manabian@...il.com>
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Kukjin Kim <kgene@...nel.org>,
	devicetree <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: s3c: Fix DTC unit name warnings in S3C2416 and
 S3C6410

On Fri, Apr 01, 2016 at 04:22:59PM +0200, Joachim Eastwood wrote:
> On 1 April 2016 at 09:11, Krzysztof Kozlowski <k.kozlowski@...sung.com> wrote:
> > Fix following DTC warnings in S3C2416 and S3C6410 boards:
> >
> > Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
> >
> > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> > ---
> >  arch/arm/boot/dts/s3c2416-smdk2416.dts | 2 +-
> >  arch/arm/boot/dts/s3c6410-mini6410.dts | 2 +-
> >  arch/arm/boot/dts/s3c6410-smdk6410.dts | 2 +-
> >  3 files changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/s3c2416-smdk2416.dts b/arch/arm/boot/dts/s3c2416-smdk2416.dts
> > index f257926c13b7..15f3d1c1bb80 100644
> > --- a/arch/arm/boot/dts/s3c2416-smdk2416.dts
> > +++ b/arch/arm/boot/dts/s3c2416-smdk2416.dts
> > @@ -15,7 +15,7 @@
> >         model = "SMDK2416";
> >         compatible = "samsung,s3c2416";
> >
> > -       memory {
> > +       memory@...00000 {
> >                 reg =  <0x30000000 0x4000000>;
> >         };
> 
> This change will cause duplicated memory node entries in the DT as
> noted by Vladimir Zapolskiy [1]. Same goes for all the other patch
> where you make this change.
> 
> $ scripts/dtc/dtc -I dtb -O dts arch/arm/boot/dts/s3c2416-smdk2416.dtb
> | grep -A2 memory
>         memory {
>                 device_type = "memory";
>                 reg = <0x0 0x0>;
>         };
> --
>         memory@...00000 {
>                 reg = <0x30000000 0x4000000>;
>         };

Yeah, I also spotted this later after running scripts/dtx_diff. I will
leave the memory node untouched.

Thanks for feedback!
Krzysztof