From patchwork Fri Mar 12 07:55:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Irui Wang X-Patchwork-Id: 12133879 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=unavailable 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 44661C4321A for ; Fri, 12 Mar 2021 07:57:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECB4264FCD for ; Fri, 12 Mar 2021 07:57:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232002AbhCLH43 (ORCPT ); Fri, 12 Mar 2021 02:56:29 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:56494 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S231636AbhCLHz7 (ORCPT ); Fri, 12 Mar 2021 02:55:59 -0500 X-UUID: f95d19139dce4867aaa4b18b3d554191-20210312 X-UUID: f95d19139dce4867aaa4b18b3d554191-20210312 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] 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 2076225860; Fri, 12 Mar 2021 15:55:50 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 12 Mar 2021 15:55:48 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 12 Mar 2021 15:55:47 +0800 From: Irui Wang To: Alexandre Courbot , Hans Verkuil , Tiffany Lin , Andrew-CT Chen , Mauro Carvalho Chehab , Rob Herring , Matthias Brugger , Tomasz Figa , Hsin-Yi Wang , Maoguang Meng , Longfei Wang , Yunfei Dong , CC: Irui Wang , , , , , , Subject: [PATCH v2,1/5] dt-bindings: media: mtk-vcodec: Add dma-ranges property Date: Fri, 12 Mar 2021 15:55:38 +0800 Message-ID: <20210312075542.5503-2-irui.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210312075542.5503-1-irui.wang@mediatek.com> References: <20210312075542.5503-1-irui.wang@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 9AD2604808B236AB1281924F3F7EB318735AA395EF3B3D65D1674ABD64299D6D2000:8 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The mt8192 iommu support 0~16GB iova. We separate it to four banks: 0~4G; 4G~8G; 8G~12G; 12G~16G. The "dma-ranges" could be used to adjust the bank we locate. If we don't set this property. The default range always is 0~4G. Here we don't have actual bus/parent concept here. And the iova requirement is for our HW. Thus put the property in our node. Signed-off-by: Irui Wang --- Documentation/devicetree/bindings/media/mediatek-vcodec.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt index 8318f0ed492d..d852683d3e6f 100644 --- a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt +++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt @@ -22,6 +22,8 @@ Required properties: - iommus : should point to the respective IOMMU block with master port as argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt for details. +- dma-ranges : describes how the physical address space of the IOMMU maps + to memory. One of the two following nodes: - mediatek,vpu : the node of the video processor unit, if using VPU. - mediatek,scp : the node of the SCP unit, if using SCP.