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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 1D814C4167B for ; Wed, 9 Dec 2020 08:01:39 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 B0CCD23B97 for ; Wed, 9 Dec 2020 08:01:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B0CCD23B97 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 5972E876A4; Wed, 9 Dec 2020 08:01:38 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7gSBxXct6Hsn; Wed, 9 Dec 2020 08:01:37 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 31610877CA; Wed, 9 Dec 2020 08:01:37 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1D511C0FA7; Wed, 9 Dec 2020 08:01:37 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id B4313C013B for ; Wed, 9 Dec 2020 08:01:35 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id A2A5C86C23 for ; Wed, 9 Dec 2020 08:01:35 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id x9fnhtyD8jCy for ; Wed, 9 Dec 2020 08:01:34 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mailgw01.mediatek.com (unknown [210.61.82.183]) by fraxinus.osuosl.org (Postfix) with ESMTP id 58B1A86C43 for ; Wed, 9 Dec 2020 08:01:34 +0000 (UTC) X-UUID: 7ebbd66466264caeb55234e58979ed57-20201209 X-UUID: 7ebbd66466264caeb55234e58979ed57-20201209 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1326156518; Wed, 09 Dec 2020 16:01:30 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 9 Dec 2020 16:01:28 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 9 Dec 2020 16:01:27 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Rob Herring , Will Deacon , Robin Murphy Subject: [PATCH v5 01/27] dt-bindings: iommu: mediatek: Convert IOMMU to DT schema Date: Wed, 9 Dec 2020 16:00:36 +0800 Message-ID: <20201209080102.26626-2-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20201209080102.26626-1-yong.wu@mediatek.com> References: <20201209080102.26626-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, chao.hao@mediatek.com, linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, Krzysztof Kozlowski , anan.sun@mediatek.com, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 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 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Convert MediaTek IOMMU to DT schema. Signed-off-by: Yong Wu Reviewed-by: Rob Herring --- .../bindings/iommu/mediatek,iommu.txt | 105 ----------- .../bindings/iommu/mediatek,iommu.yaml | 167 ++++++++++++++++++ 2 files changed, 167 insertions(+), 105 deletions(-) delete mode 100644 Documentation/devicetree/bindings/iommu/mediatek,iommu.txt create mode 100644 Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt deleted file mode 100644 index ac949f7fe3d4..000000000000 --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt +++ /dev/null @@ -1,105 +0,0 @@ -* Mediatek IOMMU Architecture Implementation - - Some Mediatek SOCs contain a Multimedia Memory Management Unit (M4U), and -this M4U have two generations of HW architecture. Generation one uses flat -pagetable, and only supports 4K size page mapping. Generation two uses the -ARM Short-Descriptor translation table format for address translation. - - About the M4U Hardware Block Diagram, please check below: - - EMI (External Memory Interface) - | - m4u (Multimedia Memory Management Unit) - | - +--------+ - | | - gals0-rx gals1-rx (Global Async Local Sync rx) - | | - | | - gals0-tx gals1-tx (Global Async Local Sync tx) - | | Some SoCs may have GALS. - +--------+ - | - SMI Common(Smart Multimedia Interface Common) - | - +----------------+------- - | | - | gals-rx There may be GALS in some larbs. - | | - | | - | gals-tx - | | - SMI larb0 SMI larb1 ... SoCs have several SMI local arbiter(larb). - (display) (vdec) - | | - | | - +-----+-----+ +----+----+ - | | | | | | - | | |... | | | ... There are different ports in each larb. - | | | | | | -OVL0 RDMA0 WDMA0 MC PP VLD - - As above, The Multimedia HW will go through SMI and M4U while it -access EMI. SMI is a bridge between m4u and the Multimedia HW. It contain -smi local arbiter and smi common. It will control whether the Multimedia -HW should go though the m4u for translation or bypass it and talk -directly with EMI. And also SMI help control the power domain and clocks for -each local arbiter. - Normally we specify a local arbiter(larb) for each multimedia HW -like display, video decode, and camera. And there are different ports -in each larb. Take a example, There are many ports like MC, PP, VLD in the -video decode local arbiter, all these ports are according to the video HW. - In some SoCs, there may be a GALS(Global Async Local Sync) module between -smi-common and m4u, and additional GALS module between smi-larb and -smi-common. GALS can been seen as a "asynchronous fifo" which could help -synchronize for the modules in different clock frequency. - -Required properties: -- compatible : must be one of the following string: - "mediatek,mt2701-m4u" for mt2701 which uses generation one m4u HW. - "mediatek,mt2712-m4u" for mt2712 which uses generation two m4u HW. - "mediatek,mt6779-m4u" for mt6779 which uses generation two m4u HW. - "mediatek,mt7623-m4u", "mediatek,mt2701-m4u" for mt7623 which uses - generation one m4u HW. - "mediatek,mt8167-m4u" for mt8167 which uses generation two m4u HW. - "mediatek,mt8173-m4u" for mt8173 which uses generation two m4u HW. - "mediatek,mt8183-m4u" for mt8183 which uses generation two m4u HW. -- reg : m4u register base and size. -- interrupts : the interrupt of m4u. -- clocks : must contain one entry for each clock-names. -- clock-names : Only 1 optional clock: - - "bclk": the block clock of m4u. - Here is the list which require this "bclk": - - mt2701, mt2712, mt7623 and mt8173. - Note that m4u use the EMI clock which always has been enabled before kernel - if there is no this "bclk". -- mediatek,larbs : List of phandle to the local arbiters in the current Socs. - Refer to bindings/memory-controllers/mediatek,smi-larb.txt. It must sort - according to the local arbiter index, like larb0, larb1, larb2... -- iommu-cells : must be 1. This is the mtk_m4u_id according to the HW. - Specifies the mtk_m4u_id as defined in - dt-binding/memory/mt2701-larb-port.h for mt2701, mt7623 - dt-binding/memory/mt2712-larb-port.h for mt2712, - dt-binding/memory/mt6779-larb-port.h for mt6779, - dt-binding/memory/mt8167-larb-port.h for mt8167, - dt-binding/memory/mt8173-larb-port.h for mt8173, and - dt-binding/memory/mt8183-larb-port.h for mt8183. - -Example: - iommu: iommu@10205000 { - compatible = "mediatek,mt8173-m4u"; - reg = <0 0x10205000 0 0x1000>; - interrupts = ; - clocks = <&infracfg CLK_INFRA_M4U>; - clock-names = "bclk"; - mediatek,larbs = <&larb0 &larb1 &larb2 &larb3 &larb4 &larb5>; - #iommu-cells = <1>; - }; - -Example for a client device: - display { - compatible = "mediatek,mt8173-disp"; - iommus = <&iommu M4U_PORT_DISP_OVL0>, - <&iommu M4U_PORT_DISP_RDMA0>; - ... - }; diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml new file mode 100644 index 000000000000..b9946809fc2b --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml @@ -0,0 +1,167 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/mediatek,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek IOMMU Architecture Implementation + +maintainers: + - Yong Wu + +description: |+ + Some MediaTek SOCs contain a Multimedia Memory Management Unit (M4U), and + this M4U have two generations of HW architecture. Generation one uses flat + pagetable, and only supports 4K size page mapping. Generation two uses the + ARM Short-Descriptor translation table format for address translation. + + About the M4U Hardware Block Diagram, please check below: + + EMI (External Memory Interface) + | + m4u (Multimedia Memory Management Unit) + | + +--------+ + | | + gals0-rx gals1-rx (Global Async Local Sync rx) + | | + | | + gals0-tx gals1-tx (Global Async Local Sync tx) + | | Some SoCs may have GALS. + +--------+ + | + SMI Common(Smart Multimedia Interface Common) + | + +----------------+------- + | | + | gals-rx There may be GALS in some larbs. + | | + | | + | gals-tx + | | + SMI larb0 SMI larb1 ... SoCs have several SMI local arbiter(larb). + (display) (vdec) + | | + | | + +-----+-----+ +----+----+ + | | | | | | + | | |... | | | ... There are different ports in each larb. + | | | | | | + OVL0 RDMA0 WDMA0 MC PP VLD + + As above, The Multimedia HW will go through SMI and M4U while it + access EMI. SMI is a bridge between m4u and the Multimedia HW. It contain + smi local arbiter and smi common. It will control whether the Multimedia + HW should go though the m4u for translation or bypass it and talk + directly with EMI. And also SMI help control the power domain and clocks for + each local arbiter. + + Normally we specify a local arbiter(larb) for each multimedia HW + like display, video decode, and camera. And there are different ports + in each larb. Take a example, There are many ports like MC, PP, VLD in the + video decode local arbiter, all these ports are according to the video HW. + + In some SoCs, there may be a GALS(Global Async Local Sync) module between + smi-common and m4u, and additional GALS module between smi-larb and + smi-common. GALS can been seen as a "asynchronous fifo" which could help + synchronize for the modules in different clock frequency. + +properties: + compatible: + oneOf: + - enum: + - mediatek,mt2701-m4u # generation one + - mediatek,mt2712-m4u # generation two + - mediatek,mt6779-m4u # generation two + - mediatek,mt8167-m4u # generation two + - mediatek,mt8173-m4u # generation two + - mediatek,mt8183-m4u # generation two + + - description: mt7623 generation one + items: + - const: mediatek,mt7623-m4u + - const: mediatek,mt2701-m4u + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: bclk is the block clock. + + clock-names: + items: + - const: bclk + + mediatek,larbs: + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 1 + maxItems: 16 + description: | + List of phandle to the local arbiters in the current Socs. + Refer to bindings/memory-controllers/mediatek,smi-larb.yaml. It must sort + according to the local arbiter index, like larb0, larb1, larb2... + + '#iommu-cells': + const: 1 + description: | + This is the mtk_m4u_id according to the HW. Specifies the mtk_m4u_id as + defined in + dt-binding/memory/mt2701-larb-port.h for mt2701 and mt7623, + dt-binding/memory/mt2712-larb-port.h for mt2712, + dt-binding/memory/mt6779-larb-port.h for mt6779, + dt-binding/memory/mt8167-larb-port.h for mt8167, + dt-binding/memory/mt8173-larb-port.h for mt8173, + dt-binding/memory/mt8183-larb-port.h for mt8183. + +required: + - compatible + - reg + - interrupts + - mediatek,larbs + - '#iommu-cells' + +allOf: + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt2701-m4u + - mediatek,mt2712-m4u + - mediatek,mt8173-m4u + + then: + required: + - clocks + +additionalProperties: false + +examples: + - | + #include + #include + + iommu: iommu@10205000 { + compatible = "mediatek,mt8173-m4u"; + reg = <0x10205000 0x1000>; + interrupts = ; + clocks = <&infracfg CLK_INFRA_M4U>; + clock-names = "bclk"; + mediatek,larbs = <&larb0 &larb1 &larb2 + &larb3 &larb4 &larb5>; + #iommu-cells = <1>; + }; + + - | + #include + + /* Example for a client device */ + display { + compatible = "mediatek,mt8173-disp"; + iommus = <&iommu M4U_PORT_DISP_OVL0>, + <&iommu M4U_PORT_DISP_RDMA0>; + }; -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu