From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Kurtz Subject: [PATCH v4 2/3] dt-bindings: iommu: Add documentation for rockchip iommu Date: Tue, 14 Oct 2014 15:45:04 +0800 Message-ID: <1413272705-9111-3-git-send-email-djkurtz@chromium.org> References: <1413272705-9111-1-git-send-email-djkurtz@chromium.org> Return-path: In-Reply-To: <1413272705-9111-1-git-send-email-djkurtz-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Grant Grundler , =?UTF-8?q?St=C3=A9phane=20Marchesin?= , Daniel Kurtz , Simon Xue , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , "open list:OPEN FIRMWARE AND..." , open list List-Id: devicetree@vger.kernel.org Add binding documentation for Rockchip IOMMU. Signed-off-by: Daniel Kurtz Signed-off-by: Simon Xue --- .../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..810e058a --- /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@0xff940300 { + compatible = "rockchip,iommu"; + reg = <0xff940300 0x100>; + interrupts = ; + interrupt-names = "vopl_mmu"; + #iommu-cells = <0>; + }; -- 2.1.0.rc2.206.gedb03e5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html