From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krishna Reddy Subject: RE: [PATCH 2/7] dt-bindings: arm-smmu: Add binding for nvidia,smmu-v2 Date: Fri, 30 Aug 2019 18:12:08 +0000 Message-ID: References: <1567118827-26358-1-git-send-email-vdumpa@nvidia.com> <1567118827-26358-3-git-send-email-vdumpa@nvidia.com> <37034b76-7e3f-5f3c-25b2-696e25127682@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <37034b76-7e3f-5f3c-25b2-696e25127682@arm.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Robin Murphy Cc: Sachin Nikam , "Thomas Zeng (SW-TEGRA)" , Juha Tukkinen , Mikko Perttunen , Pritesh Raithatha , "iommu@lists.linux-foundation.org" , "linux-kernel@vger.kernel.org" , Timo Alho , Yu-Huan Hsu , "linux-tegra@vger.kernel.org" , Thierry Reding , Alexander Van Brunt , "linux-arm-kernel@lists.infradead.org" List-Id: linux-tegra@vger.kernel.org Pj4gKyAgICAgICAgICAgICAgICAgICAgICAgICJuaWRpYSxzbW11LXYyIg0KPj4gICAgICAgICAg ICAgICAgICAgICAgICAgICAicWNvbSxzbW11LXYyIg0KDQo+SSBhZ3JlZSB3aXRoIE1pa2tvIHRo YXQgdGhlIGNvbXBhdGlibGUgbXVzdCBiZSBhdCBsZWFzdCBTb0Mtc3BlY2lmaWMsIGJ1dCBwb3Rl bnRpYWxseSBldmVuIGluc3RhbmNlLXNwZWNpZmljIChlLmcuICJudmlkaWEsdGVncmExOTQtZ3B1 LXNtbXUiKQ0KPiBkZXBlbmRpbmcgb24gaG93IG1hbnkgb2YgdGhlc2UgcGFyYWxsZWwtU01NVSBj b25maWd1cmF0aW9ucyBtaWdodCBiZSBoaWRpbmcgaW4gY3VycmVudCBhbmQgZnV0dXJlIFNvQ3Mu DQoNCkkgYW0gY29ycmVjdGluZyB0aGUgc3BlbGxpbmcgbWlzdGFrZSBwb2ludGVkIGJ5IE1pa2tv LiAgVGhlIE5WSURJQSBTTU1VdjIgaW1wbGVtZW50YXRpb24gaXMgZ2V0dGluZyB1c2VkIGJleW9u ZCAgVGVncmExOTQgU09DLiAgDQpUbyBiZSBhYmxlIHRvIHVzZSB0aGUgc21tdSBjb21wYXRpYmxl IHN0cmluZyBhY3Jvc3MgbXVsdGlwbGUgU09DJ3MsICJudmlkaWEsc21tdS12MiIgY29tcGF0aWJs ZSBzdHJpbmcgaXMgY2hvc2VuLg0KQXJlIHlvdSBzdWdnZXN0aW5nIHRvIG1ha2UgaXQgc29jIHNw ZWNpZmljIGFuZCBhZGQgYW5vdGhlciBvbmUgaW4gZnV0dXJlPw0KDQotS1INCiANCg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CC71C3A59B for ; 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b=MafNGO9y5FPOyLgc4gHSnPBpPuD7B5+I9NEgnkkt1Wu82aE9QQ83rvrEa1LBB5gcM HasetZfr8V+pX63W5WtwdkaCjm8N5S7KixzdasA/DNu6GFGly3qZUaSMbXeBBgNTwm +hKJfuIcaB9K8MsqFUYH8Ud7PWsRj5zwESOVT+UWrWNbZJw4p3BCb8+4njIUVwD4Af GYXIbwE4fy0EAv+zbTAvRdlDHO8Tepn3Qjkl0mdYLvdLNd2LG+X47pIS0nRDix9AnN /7XNo8huQD+KGPsbjSEGRdCKuKOxDqf/7ZUdc4luLY8LtHJ61MXP7UoiCAIhe8afEK kqlJbI8slxtgw== Cc: Timo Alho , Thierry Reding , Mikko Perttunen , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , Pritesh Raithatha , "Thomas Zeng \(SW-TEGRA\)" , Sachin Nikam , "linux-tegra@vger.kernel.org" , Yu-Huan Hsu , Juha Tukkinen , Alexander Van Brunt , "linux-arm-kernel@lists.infradead.org" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org >> + "nidia,smmu-v2" >> "qcom,smmu-v2" >I agree with Mikko that the compatible must be at least SoC-specific, but potentially even instance-specific (e.g. "nvidia,tegra194-gpu-smmu") > depending on how many of these parallel-SMMU configurations might be hiding in current and future SoCs. I am correcting the spelling mistake pointed by Mikko. The NVIDIA SMMUv2 implementation is getting used beyond Tegra194 SOC. To be able to use the smmu compatible string across multiple SOC's, "nvidia,smmu-v2" compatible string is chosen. Are you suggesting to make it soc specific and add another one in future? -KR _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4742C3A59B for ; Fri, 30 Aug 2019 18:12:24 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8831E2342E for ; 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Fri, 30 Aug 2019 18:12:08 +0000 From: Krishna Reddy To: Robin Murphy Subject: RE: [PATCH 2/7] dt-bindings: arm-smmu: Add binding for nvidia, smmu-v2 Thread-Topic: [PATCH 2/7] dt-bindings: arm-smmu: Add binding for nvidia,smmu-v2 Thread-Index: AQHVXruKO4f1UhWPvU2lIJwxk9hV3KcTzW4AgAAwllA= Date: Fri, 30 Aug 2019 18:12:08 +0000 Message-ID: References: <1567118827-26358-1-git-send-email-vdumpa@nvidia.com> <1567118827-26358-3-git-send-email-vdumpa@nvidia.com> <37034b76-7e3f-5f3c-25b2-696e25127682@arm.com> In-Reply-To: <37034b76-7e3f-5f3c-25b2-696e25127682@arm.com> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Enabled=True; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_SiteId=43083d15-7273-40c1-b7db-39efd9ccc17a; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Owner=VDUMPA@nvidia.com; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_SetDate=2019-08-30T18:12:05.1263803Z; MSIP_Label_6b558183-044c-4105-8d9c-cea02a2a3d86_Name=Unrestricted; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Timo Alho , Thierry Reding , Mikko Perttunen , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , Pritesh Raithatha , "Thomas Zeng \(SW-TEGRA\)" , Sachin Nikam , "linux-tegra@vger.kernel.org" , Yu-Huan Hsu , Juha Tukkinen , Alexander Van Brunt , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org >> + "nidia,smmu-v2" >> "qcom,smmu-v2" >I agree with Mikko that the compatible must be at least SoC-specific, but potentially even instance-specific (e.g. "nvidia,tegra194-gpu-smmu") > depending on how many of these parallel-SMMU configurations might be hiding in current and future SoCs. I am correcting the spelling mistake pointed by Mikko. The NVIDIA SMMUv2 implementation is getting used beyond Tegra194 SOC. To be able to use the smmu compatible string across multiple SOC's, "nvidia,smmu-v2" compatible string is chosen. Are you suggesting to make it soc specific and add another one in future? -KR _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel