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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id k11sm4871965otr.14.2020.11.16.09.44.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Nov 2020 09:44:02 -0800 (PST) Received: (nullmailer pid 1862027 invoked by uid 1000); Mon, 16 Nov 2020 17:44:01 -0000 Date: Mon, 16 Nov 2020 11:44:01 -0600 From: Rob Herring To: Yong Wu Subject: Re: [PATCH v4 04/24] dt-bindings: memory: mediatek: Add domain definition Message-ID: <20201116174401.GA1861980@bogus> References: <20201111123838.15682-1-yong.wu@mediatek.com> <20201111123838.15682-5-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201111123838.15682-5-yong.wu@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201116_124404_719879_585E4E15 X-CRM114-Status: GOOD ( 16.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, chao.hao@mediatek.com, kernel-team@android.com, Joerg Roedel , anan.sun@mediatek.com, Krzysztof Kozlowski , linux-kernel@vger.kernel.org, Tomasz Figa , iommu@lists.linux-foundation.org, Rob Herring , linux-mediatek@lists.infradead.org, Evan Green , Matthias Brugger , Greg Kroah-Hartman , Will Deacon , linux-arm-kernel@lists.infradead.org, Robin Murphy Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 11 Nov 2020 20:38:18 +0800, Yong Wu wrote: > In the latest SoC, there are several HW IP require a sepecial iova > range, mainly CCU and VPU has this requirement. Take CCU as a example, > CCU require its iova locate in the range(0x4000_0000 ~ 0x43ff_ffff). > > In this patch we add a domain definition for the special port. In the > example of CCU, If we preassign CCU port in domain1, then iommu driver > will prepare a independent iommu domain of the special iova range for it, > then the iova got from dma_alloc_attrs(ccu-dev) will locate in its special > range. > > This is a preparing patch for multi-domain support. > > Signed-off-by: Yong Wu > --- > include/dt-bindings/memory/mtk-smi-larb-port.h | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > Acked-by: Rob Herring _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel