From patchwork Fri Nov 16 11:24:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 10686057 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A34541709 for ; Fri, 16 Nov 2018 11:25:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 933EB2CD2F for ; Fri, 16 Nov 2018 11:25:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 874182CD39; Fri, 16 Nov 2018 11:25:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2118A2CD2F for ; Fri, 16 Nov 2018 11:25:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389677AbeKPVh2 (ORCPT ); Fri, 16 Nov 2018 16:37:28 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:50924 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727567AbeKPVh2 (ORCPT ); Fri, 16 Nov 2018 16:37:28 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id BD676612F6; Fri, 16 Nov 2018 11:25:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1542367530; bh=w5KvvTBfYynd1x1fNTV9Dhsc1zAtL2Dub+JTXrIxKLY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZREiYdNrpopwxL//NOj+pOwsD71XKYkMJjrA1KDMYvY/ne+Asr4cW+GJ9mGMEjohn 0VbqMZXhPMoMcLsFRWvSppIe91k0R7e6/Gy1uHzzGBqo9getfQqsP9rgf28wdrfoXg 6D9JYQLk7Zs4xY1qf2g1iT7LwgPldCROZgTgN3iI= Received: from blr-ubuntu-41.ap.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vivek.gautam@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id BA6B060C65; Fri, 16 Nov 2018 11:25:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1542367519; bh=w5KvvTBfYynd1x1fNTV9Dhsc1zAtL2Dub+JTXrIxKLY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Rv4PbOrTChP87+yr9r+x9NmXinZHN0EgK9gGw+S/3lQez6i5oFBJbSewCgHrEsKHD gsOCS8WCWeDm4djJI9Cnbs9VOYHCfqvmLGSgZARhMCEUU1TIVJRJNo4d3MLlmhWB7u Lzyt5RaNU+pOnn5yECj3ncF6DghIhvs3JYtU8+IE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BA6B060C65 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=vivek.gautam@codeaurora.org From: Vivek Gautam To: joro@8bytes.org, robh+dt@kernel.org, robin.murphy@arm.com, will.deacon@arm.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: alex.williamson@redhat.com, mark.rutland@arm.com, rjw@rjwysocki.net, robdclark@gmail.com, linux-pm@vger.kernel.org, freedreno@lists.freedesktop.org, sboyd@kernel.org, tfiga@chromium.org, jcrouse@codeaurora.org, sricharan@codeaurora.org, m.szyprowski@samsung.com, architt@codeaurora.org, linux-arm-msm@vger.kernel.org, Vivek Gautam Subject: [RESEND PATCH v17 4/5] dt-bindings: arm-smmu: Add bindings for qcom,smmu-v2 Date: Fri, 16 Nov 2018 16:54:29 +0530 Message-Id: <20181116112430.31248-5-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 In-Reply-To: <20181116112430.31248-1-vivek.gautam@codeaurora.org> References: <20181116112430.31248-1-vivek.gautam@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add bindings doc for Qcom's smmu-v2 implementation. Signed-off-by: Vivek Gautam Reviewed-by: Tomasz Figa Tested-by: Srinivas Kandagatla Reviewed-by: Rob Herring Reviewed-by: Robin Murphy --- .../devicetree/bindings/iommu/arm,smmu.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt index 8a6ffce12af5..a6504b37cc21 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -17,10 +17,16 @@ conditions. "arm,mmu-401" "arm,mmu-500" "cavium,smmu-v2" + "qcom,smmu-v2" depending on the particular implementation and/or the version of the architecture implemented. + Qcom SoCs must contain, as below, SoC-specific compatibles + along with "qcom,smmu-v2": + "qcom,msm8996-smmu-v2", "qcom,smmu-v2", + "qcom,sdm845-smmu-v2", "qcom,smmu-v2". + - reg : Base address and size of the SMMU. - #global-interrupts : The number of global interrupts exposed by the @@ -71,6 +77,22 @@ conditions. or using stream matching with #iommu-cells = <2>, and may be ignored if present in such cases. +- clock-names: List of the names of clocks input to the device. The + required list depends on particular implementation and + is as follows: + - for "qcom,smmu-v2": + - "bus": clock required for downstream bus access and + for the smmu ptw, + - "iface": clock required to access smmu's registers + through the TCU's programming interface. + - unspecified for other implementations. + +- clocks: Specifiers for all clocks listed in the clock-names property, + as per generic clock bindings. + +- power-domains: Specifiers for power domains required to be powered on for + the SMMU to operate, as per generic power domain bindings. + ** Deprecated properties: - mmu-masters (deprecated in favour of the generic "iommus" binding) : @@ -137,3 +159,20 @@ conditions. iommu-map = <0 &smmu3 0 0x400>; ... }; + + /* Qcom's arm,smmu-v2 implementation */ + smmu4: iommu@d00000 { + compatible = "qcom,msm8996-smmu-v2", "qcom,smmu-v2"; + reg = <0xd00000 0x10000>; + + #global-interrupts = <1>; + interrupts = , + , + ; + #iommu-cells = <1>; + power-domains = <&mmcc MDSS_GDSC>; + + clocks = <&mmcc SMMU_MDP_AXI_CLK>, + <&mmcc SMMU_MDP_AHB_CLK>; + clock-names = "bus", "iface"; + };