linux-kernel - RE: [PATCH 2/3] Docs: dt: fsl-mc update binding to include definition of ranges

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Date:	Tue, 29 Sep 2015 19:21:37 +0000
From:	Jose Rivera <German.Rivera@...escale.com>
To:	Stuart Yoder <stuart.yoder@...escale.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"mark.rutland@....com" <mark.rutland@....com>
CC:	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sharma Bhupesh <bhupesh.sharma@...escale.com>,
	Katz Itai <itai.katz@...escale.com>,
	"Stuart Yoder" <stuart.yoder@...escale.com>
Subject: RE: [PATCH 2/3] Docs: dt: fsl-mc update binding to include definition
 of ranges

> -----Original Message-----
> From: Stuart Yoder [mailto:stuart.yoder@...escale.com]
> Sent: Friday, September 25, 2015 4:08 PM
> To: robh+dt@...nel.org; mark.rutland@....com
> Cc: devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; Rivera
> Jose-B46482; Sharma Bhupesh-B45370; katz Itai-RM05202; Yoder Stuart-
> B08248
> Subject: [PATCH 2/3] Docs: dt: fsl-mc update binding to include
> definition of ranges
> 
> Define a ranges property to specify the mapping between the MC address
> space and the system address space.
> 
> Signed-off-by: Stuart Yoder <stuart.yoder@...escale.com>
> ---
>  .../devicetree/bindings/misc/fsl,qoriq-mc.txt      | 30
> +++++++++++++++++++++-
>  1 file changed, 29 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> index 6aac955..848975f 100644
> --- a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> +++ b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
> @@ -35,6 +35,26 @@ Required properties:
>          Definition: Must be present and point to the MSI controller node
>                      handling message interrupts for the MC.
> 
> +    - ranges
> +        Value type: <prop-encoded-array>
> +        Definition: A standard property.  Defines the mapping between
> the child
> +                    MC address space and the parent system address
> space.
> +
> +                    The MC address space is defined by 3 components:
> +                       <region type> <offset hi> <offset lo>
> +
> +                    Valid values for region type are
> +                       0x0 - MC portals
> +                       0x1 - QBMAN portals
> +
> +    - #address-cells
> +        Value type: <u32>
> +        Definition: Must be 3.  (see definition in 'ranges' property)
> +
> +    - #size-cells
> +        Value type: <u32>
> +        Definition: Must be 1.
> +
>  Example:
> 
>          fsl_mc: fsl-mc@...000000 {
> @@ -42,5 +62,13 @@ Example:
>                  reg = <0x00000008 0x0c000000 0 0x40>,    /* MC portal
> base */
>                        <0x00000000 0x08340000 0 0x40000>; /* MC control
> reg */
>                  msi-parent = <&its>;
> -        };
> +                #address-cells = <3>;
> +                #size-cells = <1>;
> 
> +                /*
> +                 * Region type 0x0 - MC portals
> +                 * Region type 0x1 - QBMAN portals
> +                 */
> +                ranges = <0x0 0x0 0x0 0x8 0x0c000000 0x4000000
> +                          0x1 0x0 0x0 0x8 0x18000000 0x8000000>;
> +        };
> --
> 2.3.3

Acked-by: J. German Rivera <German.Rivera@...escale.com>

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