linux-kernel - Re: [PATCH 5/5] arm64: Add DT support for Juno r1 board.

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Message-ID: <20150514141440.GT2345@e106497-lin.cambridge.arm.com>
Date:	Thu, 14 May 2015 15:14:40 +0100
From:	Liviu Dudau <Liviu.Dudau@....com>
To:	"Jon Medhurst (Tixy)" <tixy@...aro.org>
Cc:	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <Mark.Rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Marc Zyngier <Marc.Zyngier@....com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	Sudeep Holla <Sudeep.Holla@....com>,
	devicetree <devicetree@...r.kernel.org>,
	LAKML <linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] arm64: Add DT support for Juno r1 board.

On Thu, May 14, 2015 at 03:07:31PM +0100, Jon Medhurst (Tixy) wrote:
> On Wed, 2015-05-13 at 18:11 +0100, Liviu Dudau wrote:
> > This board is based on Juno r0 with updated Cortex A5x revisions
> > and board errata fixes. It also contains coherent ThinLinks ports
> > on the expansion slot that allow for an AXI master on the daughter
> > card to participate in a coherency domain.
> > 
> > Support for SoC PCIe host bridge will be added as a separate series.
> > 
> > Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
> > ---
> >  arch/arm64/boot/dts/arm/Makefile    |   2 +-
> >  arch/arm64/boot/dts/arm/juno-r1.dts | 123 ++++++++++++++++++++++++++++++++++++
> >  2 files changed, 124 insertions(+), 1 deletion(-)
> >  create mode 100644 arch/arm64/boot/dts/arm/juno-r1.dts
> > 
> > diff --git a/arch/arm64/boot/dts/arm/Makefile b/arch/arm64/boot/dts/arm/Makefile
> > index 301a0da..c5c98b9 100644
> > --- a/arch/arm64/boot/dts/arm/Makefile
> > +++ b/arch/arm64/boot/dts/arm/Makefile
> > @@ -1,5 +1,5 @@
> >  dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb
> > -dtb-$(CONFIG_ARCH_VEXPRESS) += juno.dtb
> > +dtb-$(CONFIG_ARCH_VEXPRESS) += juno.dtb juno-r1.dtb
> >  dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb
> >  
> >  always		:= $(dtb-y)
> > diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
> > new file mode 100644
> > index 0000000..f6bc073
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/arm/juno-r1.dts
> > @@ -0,0 +1,123 @@
> > +/*
> > + * ARM Ltd. Juno Platform
> > + *
> > + * Copyright (c) 2015 ARM Ltd.
> > + *
> > + * This file is licensed under a dual GPLv2 or BSD license.
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +/ {
> > +	model = "ARM Juno development board (r1)";
> > +	compatible = "arm,juno", "arm,vexpress";
> 
> Is there scope for adding "arm,juno-r1" to the front of that list?
> Reason I ask, is that I can't help but think [1] that userside code
> (like Android) which wants to select device-specific configuration,
> should use something like the devices compatible string rather than what
> they currently propose [2].

Sure, I can do that for the next revision of the patch.

Best regards,
Liviu

>  
> [1] https://lists.linaro.org/pipermail/linaro-android/2015-April/002743.html
> [2] https://lists.linaro.org/pipermail/linaro-android/2015-April/002742.html
> 
> -- 
> Tixy
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯

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