linux-kernel - Re: [PATCH v6 2/3] dt-bindings: iommu: Add documentation for rockchip iommu

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Message-ID: <1857030.bPXkUHlXFx@diego>
Date:	Tue, 28 Oct 2014 15:36:21 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	Daniel Kurtz <djkurtz@...omium.org>
Cc:	Joerg Roedel <joro@...tes.org>,
	Grant Grundler <grundler@...omium.org>,
	Stéphane Marchesin <marcheu@...omium.org>,
	Simon Xue <xxm@...k-chips.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>,
	Randy Dunlap <rdunlap@...radead.org>,
	Doug Anderson <dianders@...omium.org>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	"open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 2/3] dt-bindings: iommu: Add documentation for rockchip iommu

Am Montag, 27. Oktober 2014, 20:37:27 schrieb Daniel Kurtz:
> Add binding documentation for Rockchip IOMMU.
> 
> Signed-off-by: Daniel Kurtz <djkurtz@...omium.org>
> Signed-off-by: Simon Xue <xxm@...k-chips.com>

Reviewed-by: Heiko Stuebner <heiko@...ech.de>

> ---
>  .../devicetree/bindings/iommu/rockchip,iommu.txt   | 26
> ++++++++++++++++++++++ 1 file changed, 26 insertions(+)
>  create mode 100644
> Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> 
> diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt new file mode
> 100644
> index 0000000..9a55ac3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> @@ -0,0 +1,26 @@
> +Rockchip IOMMU
> +==============
> +
> +A Rockchip DRM iommu translates io virtual addresses to physical addresses
> for +its master device.  Each slave device is bound to a single master
> device, and +shares its clocks, power domain and irq.
> +
> +Required properties:
> +- compatible      : Should be "rockchip,iommu"
> +- reg             : Address space for the configuration registers
> +- interrupts      : Interrupt specifier for the IOMMU instance
> +- interrupt-names : Interrupt name for the IOMMU instance
> +- #iommu-cells    : Should be <0>.  This indicates the iommu is a
> +                    "single-master" device, and needs no additional
> information +                    to associate with its master device.  See:
> +                    Documentation/devicetree/bindings/iommu/iommu.txt
> +
> +Example:
> +
> +	vopl_mmu: iommu@...40300 {
> +		compatible = "rockchip,iommu";
> +		reg = <0xff940300 0x100>;
> +		interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "vopl_mmu";
> +		#iommu-cells = <0>;
> +	};

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