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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id x9sm130135ooo.27.2021.06.02.11.50.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jun 2021 11:50:18 -0700 (PDT) Received: (nullmailer pid 3763838 invoked by uid 1000); Wed, 02 Jun 2021 18:50:17 -0000 Date: Wed, 2 Jun 2021 13:50:17 -0500 From: Rob Herring To: Irui Wang Cc: Tiffany Lin , Maoguang Meng , Alexandre Courbot , linux-media@vger.kernel.org, Longfei Wang , Yong Wu , Project_Global_Chrome_Upstream_Group@mediatek.com, Tomasz Figa , linux-mediatek@lists.infradead.org, Rob Herring , Matthias Brugger , Andrew-CT Chen , devicetree@vger.kernel.org, Hans Verkuil , Hsin-Yi Wang , Tzung-Bi Shih , Fritz Koenig , Mauro Carvalho Chehab , srv_heupstream@mediatek.com, linux-arm-kernel@lists.infradead.org, Yunfei Dong , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4,2/6] dt-bindings: media: mtk-vcodec: Add dma-ranges property Message-ID: <20210602185017.GA3763804@robh.at.kernel.org> References: <20210521070139.20644-1-irui.wang@mediatek.com> <20210521070139.20644-3-irui.wang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210521070139.20644-3-irui.wang@mediatek.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 21 May 2021 15:01:35 +0800, Irui Wang wrote: > 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(+) > Acked-by: Rob Herring