From patchwork Fri Jan 8 11:38:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunyan Zhang X-Patchwork-Id: 359235 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 C2888C433E0 for ; Fri, 8 Jan 2021 11:40:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73763239A4 for ; Fri, 8 Jan 2021 11:40:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726853AbhAHLkG (ORCPT ); Fri, 8 Jan 2021 06:40:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726430AbhAHLkG (ORCPT ); Fri, 8 Jan 2021 06:40:06 -0500 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7ECA8C0612F9; Fri, 8 Jan 2021 03:39:25 -0800 (PST) Received: by mail-pg1-x534.google.com with SMTP id n7so7524656pgg.2; Fri, 08 Jan 2021 03:39:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=AG3QUss2Mw2LHvaADYDsO3W7gD6GpMHwEvXoc/WIGa8=; b=RG9EPVAGY8kQ+HP8A5vbzyQOVa8/2zlPM5vKCn8PVY8IsqDB6bF9YXeUBVWQDJ/oao /IyLuXuemocKHPLS5yJ7NwrKAKqmVMXgesgt3oAYxlcg0YTyXDAM0W2K8YsAQ05a41GA HyZSNBZQxTKrBVWA++JxdAIxp28kUk5vtuTO/OEHrCx+xQbbfagivRT9uS63NnpPHoPv OjLQCnxWt6e1upM3QMi1ZGbXG3g3BB9kplrzr7GXsAeQJAimTug7+FqjStwPJqT0jigF UnlGBGQrdf1Knqdg90nMBSXMcgq5BBrwcmk2twBGUu5+Is0/jZHYnlisLNKqW2WdwebZ CGTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=AG3QUss2Mw2LHvaADYDsO3W7gD6GpMHwEvXoc/WIGa8=; b=OHIgdnh1Q2FAUkjC1y4Tkd3eMXgkD6XjBNxdpiR1ACSonxEsjzb6pfPmwZQx/38Ceu qU7ZOSA3K8rHL1F+wqcUCr4jRjM/WjQ5G/P6putO1RaE2j4M4rf0y21jVhOxaIqh9cDY hFQ0VSzEy4FZkydEC6KeJ8LyAvdLUHINyXqMQv1yvFP4U3m+Xt4qrIs9qUu+tQePmdgE drLcZS8UMlEXpwxKxsIfHiJJr0bxtTnAMZ64qCqgaQgKJ9K2e+UIRgFmgB6pLmkWXD9C v9e/JDhfyqrqf2yZE3BY8ITXnz6yr70Z0Y85H4ZWWzFp3Av6Z3XHXL0D/5CLoR7ncdwp cVMw== X-Gm-Message-State: AOAM530QybwXsDojQ8OTgDhCJGFIT0hrKCk8ZfnbXhl8n0RWULPrXgaT BO3+q9BND7O3RQ8J5Z6hSQ78RAxsDQAt7g== X-Google-Smtp-Source: ABdhPJw5IbfLiabVtdNH6drZOTeV31Atl25pgHRRcLuVyayr43zK8MJf683ZQ/PR0M7IdYTKFkx7Ug== X-Received: by 2002:a63:d903:: with SMTP id r3mr6557255pgg.445.1610105965095; Fri, 08 Jan 2021 03:39:25 -0800 (PST) Received: from ubt.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id gm18sm4589136pjb.55.2021.01.08.03.39.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jan 2021 03:39:24 -0800 (PST) From: Chunyan Zhang To: Joerg Roedel , Rob Herring Cc: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, Baolin Wang , linux-kernel@vger.kernel.org, Orson Zhai , Chunyan Zhang , Sheng Xu , Kevin Tang , Chunyan Zhang Subject: [RFC PATCH V2 1/2] dt-bindings: iommu: add bindings for sprd iommu Date: Fri, 8 Jan 2021 19:38:50 +0800 Message-Id: <20210108113851.354947-2-zhang.lyra@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210108113851.354947-1-zhang.lyra@gmail.com> References: <20210108113851.354947-1-zhang.lyra@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Chunyan Zhang This patch only adds bindings to support display iommu. The iommu support for others would be added once finished tests with those devices, such as Image codec(jpeg) processor, a few signal processors, including VSP(video), GSP(graphic), ISP(image), and camera CPP, etc. Signed-off-by: Chunyan Zhang --- .../devicetree/bindings/iommu/sprd,iommu.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/sprd,iommu.yaml diff --git a/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml new file mode 100644 index 000000000000..4d9a578a7cc9 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2020 Unisoc Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Unisoc IOMMU and Multi-media MMU + +maintainers: + - Chunyan Zhang + +properties: + compatible: + enum: + - sprd,iommu-disp + + reg: + maxItems: 1 + + "#iommu-cells": + const: 0 + description: + Unisoc IOMMUs are all single-master IOMMU devices, therefore no + additional information needs to associate with its master device. + Please refer to the generic bindings document for more details, + Documentation/devicetree/bindings/iommu/iommu.txt + +required: + - compatible + - reg + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + iommu_disp: iommu@63000000 { + compatible = "sprd,iommu-disp"; + reg = <0x63000000 0x880>; + #iommu-cells = <0>; + }; + +...