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[84.226.167.205]) by smtp.googlemail.com with ESMTPSA id v20sm3378527wra.19.2020.12.09.04.13.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Dec 2020 04:13:12 -0800 (PST) Date: Wed, 9 Dec 2020 13:13:11 +0100 From: Krzysztof Kozlowski To: Yong Wu Subject: Re: [PATCH v5 06/27] dt-bindings: mediatek: Add binding for mt8192 IOMMU Message-ID: <20201209121311.GB25951@kozik-lap> References: <20201209080102.26626-1-yong.wu@mediatek.com> <20201209080102.26626-7-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201209080102.26626-7-yong.wu@mediatek.com> Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, chao.hao@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , anan.sun@mediatek.com, Robin Murphy , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Wed, Dec 09, 2020 at 04:00:41PM +0800, Yong Wu wrote: > This patch adds decriptions for mt8192 IOMMU and SMI. > > mt8192 also is MTK IOMMU gen2 which uses ARM Short-Descriptor translation > table format. The M4U-SMI HW diagram is as below: > > EMI > | > M4U > | > ------------ > SMI Common > ------------ > | > +-------+------+------+----------------------+-------+ > | | | | ...... | | > | | | | | | > larb0 larb1 larb2 larb4 ...... larb19 larb20 > disp0 disp1 mdp vdec IPE IPE > > All the connections are HW fixed, SW can NOT adjust it. > > mt8192 M4U support 0~16GB iova range. we preassign different engines > into different iova ranges: > > domain-id module iova-range larbs > 0 disp 0 ~ 4G larb0/1 > 1 vcodec 4G ~ 8G larb4/5/7 > 2 cam/mdp 8G ~ 12G larb2/9/11/13/14/16/17/18/19/20 > 3 CCU0 0x4000_0000 ~ 0x43ff_ffff larb13: port 9/10 > 4 CCU1 0x4400_0000 ~ 0x47ff_ffff larb14: port 4/5 > > The iova range for CCU0/1(camera control unit) is HW requirement. > > Signed-off-by: Yong Wu > Reviewed-by: Rob Herring > --- > .../bindings/iommu/mediatek,iommu.yaml | 18 +- > include/dt-bindings/memory/mt8192-larb-port.h | 240 ++++++++++++++++++ > 2 files changed, 257 insertions(+), 1 deletion(-) > create mode 100644 include/dt-bindings/memory/mt8192-larb-port.h > Acked-by: Krzysztof Kozlowski Best regards, Krzysztof _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu