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[2620:137:e000::1:20]) by mx.google.com with ESMTP id n23-20020aa7db57000000b00504a19f3b41si4789705edt.430.2023.04.11.03.13.46; Tue, 11 Apr 2023 03:14:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@collabora.com header.s=mail header.b=hZTzeZYD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=collabora.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229642AbjDKKNM (ORCPT + 99 others); Tue, 11 Apr 2023 06:13:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229514AbjDKKNK (ORCPT ); Tue, 11 Apr 2023 06:13:10 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D95111B0; Tue, 11 Apr 2023 03:13:08 -0700 (PDT) Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 79EBE66031AD; Tue, 11 Apr 2023 11:13:05 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1681207987; bh=1H3KWce7lVaN7lBiBpl5nSiFSWCqXnPRyAtBaYBLFVc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=hZTzeZYDKZ3ZldqIgqJCufl0SAwJbxmonCeW8hVZljq4bHLXLMSlQfdJuWwPJvf7h x/oRocUfJSEoozC6q7Fa/viYWxoj8OXyL3eq1luHMJJzXMimUDj+oHs5pCOLoF8zQK a0L2VijRN6dXRTs7FPd3OvdmsnGyS+/pxA0GT0Lwy9A9iwKJ9xRPBbJgeS/15AKuIZ r3D0NlyDvpUYbn8fQZNOMANb/xcs5MPT80GDfoP/n8iB28g982rToCB6IqVtQt8zf/ GwFuyCbdmVXGoW7gFDuewEXA0jrVBA+ndGyhdSVQ4/5Y2g0CrBVhDYuGf6HfE5UdTV 6CiAIEiXkCALQ== Message-ID: <9ea6f6f4-5ebf-e9b6-37bc-b8d018b1b25c@collabora.com> Date: Tue, 11 Apr 2023 12:13:03 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.1 Subject: Re: [PATCH v7 11/14] media: mediatek: vcodec: Remove the setting for dma_mask Content-Language: en-US To: Yong Wu , Joerg Roedel , Matthias Brugger , Mauro Carvalho Chehab , Rob Herring Cc: Will Deacon , Robin Murphy , Krzysztof Kozlowski , Hans Verkuil , nfraprado@collabora.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, mingyuan.ma@mediatek.com, yf.wang@mediatek.com, jianjiao.zeng@mediatek.com, Yunfei Dong , kyrie wu , chengci.xu@mediatek.com, youlin.pei@mediatek.com, anan.sun@mediatek.com, Tiffany Lin , Andrew-CT Chen , irui wang References: <20230411093144.2690-1-yong.wu@mediatek.com> <20230411093144.2690-12-yong.wu@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20230411093144.2690-12-yong.wu@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Il 11/04/23 11:31, Yong Wu ha scritto: > In order to simplify the masters to set their respective dma masks, MTK > IOMMU helps to centralize the processing. Because all the dma ranges is > set in IOMMU, IOMMU knows well the dma mask requirements of masters. After > this patch, the masters(codec here) code does not need care > dma-ranges/dma_mask related information. > > Cc: Tiffany Lin > Cc: Andrew-CT Chen > Cc: Yunfei Dong > Cc: Mauro Carvalho Chehab > Cc: irui wang > Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno