linux-kernel - Re: [v6, 3/5] dt: move guts devicetree doc out of powerpc directory

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Message-ID: <20160317170640.GB21009@rob-hp-laptop>
Date:	Thu, 17 Mar 2016 12:06:40 -0500
From:	Rob Herring <robh@...nel.org>
To:	Yangbo Lu <yangbo.lu@....com>
Cc:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-clk@...r.kernel.org, linux-i2c@...r.kernel.org,
	iommu@...ts.linux-foundation.org, netdev@...r.kernel.org,
	linux-mmc@...r.kernel.org, scott.wood@....com,
	Russell King <linux@....linux.org.uk>,
	Jochen Friedrich <jochen@...am.de>,
	Joerg Roedel <joro@...tes.org>,
	Claudiu Manoil <claudiu.manoil@...escale.com>,
	ulf.hansson@...aro.org,
	Bhupesh Sharma <bhupesh.sharma@...escale.com>,
	Zhao Qiang <qiang.zhao@...escale.com>,
	Kumar Gala <galak@...eaurora.org>,
	Santosh Shilimkar <ssantosh@...nel.org>, leoyang.li@....com,
	xiaobo.xie@....com
Subject: Re: [v6, 3/5] dt: move guts devicetree doc out of powerpc directory

On Wed, Mar 09, 2016 at 06:08:49PM +0800, Yangbo Lu wrote:
> Move guts devicetree doc to Documentation/devicetree/bindings/soc/fsl/
> since it's used by not only PowerPC but also ARM. And add a specification
> for 'little-endian' property.
> 
> Signed-off-by: Yangbo Lu <yangbo.lu@....com>
> ---
> Changes for v2:
> 	- None
> Changes for v3:
> 	- None
> Changes for v4:
> 	- Added this patch
> Changes for v5:
> 	- Modified the description for little-endian property
> Changes for v6:
> 	- None
> ---
>  Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt | 3 +++
>  1 file changed, 3 insertions(+)
>  rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
> 
> diff --git a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt b/Documentation/devicetree/bindings/soc/fsl/guts.txt
> similarity index 91%
> rename from Documentation/devicetree/bindings/powerpc/fsl/guts.txt
> rename to Documentation/devicetree/bindings/soc/fsl/guts.txt
> index b71b203..07adca9 100644
> --- a/Documentation/devicetree/bindings/powerpc/fsl/guts.txt
> +++ b/Documentation/devicetree/bindings/soc/fsl/guts.txt
> @@ -25,6 +25,9 @@ Recommended properties:
>   - fsl,liodn-bits : Indicates the number of defined bits in the LIODN
>     registers, for those SOCs that have a PAMU device.
>  
> + - little-endian : Indicates that the global utilities block is little
> +   endian. The default is big endian.

The default is "the native endianness of the system". So absence on an 
ARM system would be LE. This property is valid for any simple-bus 
device, so it isn't really required to document per device. You can, but 
your description had better match the documented behaviour.

Rob