From patchwork Tue Jul 21 07:30:33 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Leizhen (ThunderTown)" X-Patchwork-Id: 6832591 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6AEE29F1D4 for ; Tue, 21 Jul 2015 07:36:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A0408205DF for ; Tue, 21 Jul 2015 07:36:41 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CFD6420138 for ; Tue, 21 Jul 2015 07:36:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZHS4s-0006lZ-8Z; Tue, 21 Jul 2015 07:35:02 +0000 Received: from merlin.infradead.org ([205.233.59.134]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZHS4o-0006jr-QK for linux-arm-kernel@bombadil.infradead.org; Tue, 21 Jul 2015 07:34:58 +0000 Received: from szxga01-in.huawei.com ([58.251.152.64]) by merlin.infradead.org with esmtps (Exim 4.85 #2 (Red Hat Linux)) id 1ZHS2h-0005M6-Lf for linux-arm-kernel@lists.infradead.org; Tue, 21 Jul 2015 07:32:50 +0000 Received: from 172.24.1.49 (EHLO szxeml430-hub.china.huawei.com) ([172.24.1.49]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CRO14544; Tue, 21 Jul 2015 15:31:27 +0800 (CST) Received: from localhost (10.177.23.164) by szxeml430-hub.china.huawei.com (10.82.67.185) with Microsoft SMTP Server id 14.3.158.1; Tue, 21 Jul 2015 15:31:18 +0800 From: Zhen Lei To: Will Deacon , Joerg Roedel , linux-arm-kernel , iommu Subject: [PATCH v3 5/5] iommu/arm-smmu: describe the limitation of #iommu-cells Date: Tue, 21 Jul 2015 15:30:33 +0800 Message-ID: <1437463833-16112-6-git-send-email-thunder.leizhen@huawei.com> X-Mailer: git-send-email 1.9.5.msysgit.1 In-Reply-To: <1437463833-16112-1-git-send-email-thunder.leizhen@huawei.com> References: <1437463833-16112-1-git-send-email-thunder.leizhen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.23.164] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150721_033248_012612_F5C5E49B X-CRM114-Status: UNSURE ( 6.25 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.4 (-----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xinwei Hu , Zhen Lei , Zefan Li , Robin Murphy , Tianhong Ding Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Only support #iommu-cells = <1>. Signed-off-by: Zhen Lei --- Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt | 6 ++++++ 1 file changed, 6 insertions(+) -- 1.8.0 diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt index 3443e0f..7d110a1 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt @@ -5,6 +5,12 @@ revisions, replacing the MMIO register interface with in-memory command and event queues and adding support for the ATS and PRI components of the PCIe specification. +Please read ./iommu.txt first, here list something special as below: + +** SMMUv3 limited properties: +- #iommu-cells : fixed to <1>. The pci root device is a special case, + its IDs can be omitted in dts, seems #iommu-cells = <0>. + ** SMMUv3 required properties: - compatible : Should include: