Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161325AbbKTC2q (ORCPT ); Thu, 19 Nov 2015 21:28:46 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:25713 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934033AbbKTC2n (ORCPT ); Thu, 19 Nov 2015 21:28:43 -0500 From: Chen Feng To: , , , , , , , , CC: , , , , , Subject: [PATCH V5 RESEND 1/3] docs: iommu: Documentation for iommu in hi6220 SoC Date: Fri, 20 Nov 2015 10:25:07 +0800 Message-ID: <1447986309-47548-2-git-send-email-puck.chen@hisilicon.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447986309-47548-1-git-send-email-puck.chen@hisilicon.com> References: <1447986309-47548-1-git-send-email-puck.chen@hisilicon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.184.163.62] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A0B0206.564E8493.0053,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: d094dffff6c8c019ba956752c06347f3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1964 Lines: 54 Documentation for hi6220 iommu driver. Signed-off-by: Chen Feng --- .../bindings/iommu/hisi,hi6220-iommu.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt diff --git a/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt b/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt new file mode 100644 index 0000000..44f9101 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt @@ -0,0 +1,32 @@ +Hi6220 SoC SMMU Device Driver devicetree document +The media system shared the same smmu IP to access DDR memory. And all +media IP used the same page table. + +Below binding describes the system mmu for media system in hi6220 platform + +Required properties: +- compatible: should contain "hisilicon,hi6220-smmu". +- reg: A tuple of base address and size of System MMU registers. +- clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. +- clock-names: should contain: + * "smmu" + * "media-sc" + * "smmu-peri" +- interrupts: An interrupt specifier for interrupt signal of System MMU. +- #iommu-cells: The iommu-cells should be 0. Because no additional information + needs to be encoded in the specifier. + +Examples: + iommu@f4210000 { + compatible = "hisilicon,hi6220-smmu"; + reg = <0x0 0xf4210000 0x0 0x1000>; + interrupts = ; + clocks = <&sys_ctrl HI6220_MMU_CLK>, + <&media_ctrl HI6220_MED_MMU>, + <&sys_ctrl HI6220_MEDIA_PLL_SRC>; + clock-names = "smmu", + "media-sc", + "smmu-peri"; + #iommu-cells = <0>; + }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/