From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jungo Lin Subject: Re: [RFC,V2,03/11] dt-bindings: mt8183: Added camera ISP Pass 1 Date: Thu, 16 May 2019 14:12:26 +0800 Message-ID: <1557987146.5721.12.camel@mtksdccf07> References: <20190510015755.51495-4-jungo.lin@mediatek.com> <20190514195417.GA21726@bogus> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190514195417.GA21726@bogus> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Rob Herring Cc: ryan.yu@mediatek.com, Jerry-ch.Chen@mediatek.com, laurent.pinchart+renesas@ideasonboard.com, Rynn.Wu@mediatek.com, suleiman@chromium.org, frankie.chiu@mediatek.com, hans.verkuil@cisco.com, frederic.chen@mediatek.com, seraph.huang@mediatek.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, sj.huang@mediatek.com, yuzhao@chromium.org, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, mchehab@kernel.org, linux-arm-kernel@lists.infradead.org, Sean.Cheng@mediatek.com, srv_heupstream@mediatek.com, shik@chromium.org, tfiga@chromium.org, christie.yu@mediatek.com, zwisler@chromium.org List-Id: linux-mediatek@lists.infradead.org Hi, Rob: Thanks for your comments. On Tue, 2019-05-14 at 14:54 -0500, Rob Herring wrote: > On Fri, May 10, 2019 at 09:57:52AM +0800, Jungo Lin wrote: > > This patch adds DT binding document for the Pass 1 (P1) unit in > > Mediatek's camera ISP system. The Pass 1 unit grabs the sensor data > > out from the sensor interface, applies ISP image effects from tuning > > data and outputs the image data or statistics data to DRAM. > > > > Signed-off-by: Jungo Lin > > --- > > .../bindings/media/mediatek,camisp.txt | 92 +++++++++++++++++++ > > 1 file changed, 92 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/media/mediatek,camisp.txt > > > > diff --git a/Documentation/devicetree/bindings/media/mediatek,camisp.txt b/Documentation/devicetree/bindings/media/mediatek,camisp.txt > > new file mode 100644 > > index 000000000000..759e55a5dfac > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/media/mediatek,camisp.txt > > @@ -0,0 +1,92 @@ > > +* Mediatek Image Signal Processor Pass 1 (ISP P1) > > + > > +The Pass 1 unit of Mediatek's camera ISP system grabs the sensor data out > > +from the sensor interface, applies ISP effects from tuning data and outputs > > +the image data and statistics data to DRAM. Furthermore, Pass 1 unit has > > +the ability to output two different resolutions frames at the same time to > > +increase the performance of the camera application. > > + > > +Required properties: > > +- compatible: Must be "mediatek,mt8183-camisp" for MT8183. > > +- reg: Must contain an entry for each entry in reg-names. > > Must list reg-names here and define the values. Though, I don't find > cam1, cam2, cam3 to be too useful. > Ok, we will list all our supported reg-names in next patch. > > +- interrupts: interrupt number to the cpu. > > +- iommus: shall point to the respective IOMMU block with master port > > + as argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt > > + for details. > > How many entries? > Basic, we just need to add only one master port for IOMMU property. We will revise this and drop the other two ports. > > +- power-domains : a phandle to the power domain of this local arbiter. > > +- clocks: device clocks, see > > + Documentation/devicetree/bindings/clock/clock-bindings.txt for details. > > +- clock-names: must be "CAMSYS_CAM_CGPDN" and "CAMSYS_CAMTG_CGPDN". > > +- mediatek,larb: must contain the local arbiters in the current SOCs, see > > + Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt > > + for details. > > +- mediatek,scp : the node of system control processor (SCP), see > > + Documentation/devicetree/bindings/remoteproc/mtk,scp.txt for details. > > +- memory-region : the reserved shared memory region between Pass 1 unit and > > + system control processor. > > + > > +Example: > > +SoC specific DT entry: > > + > > + camisp: camisp@1a000000 { > > + compatible = "mediatek,mt8183-camisp", "syscon"; > > + reg = <0 0x1a000000 0 0x1000>, > > + <0 0x1a003000 0 0x1000>, > > + <0 0x1a004000 0 0x2000>, > > + <0 0x1a006000 0 0x2000>; > > + reg-names = "camisp", > > + "cam1", > > + "cam2", > > + "cam3"; > > + interrupts = , > > + , > > + ; > > + interrupt-names = "cam1", > > + "cam2", > > + "cam3"; > > + iommus = <&iommu M4U_PORT_CAM_LSCI0>, > > + <&iommu M4U_PORT_CAM_LSCI1>, > > + <&iommu M4U_PORT_CAM_BPCI>; > > + #clock-cells = <1>; > > + power-domains = <&scpsys MT8183_POWER_DOMAIN_CAM>; > > + /* Camera CCF */ > > + clocks = <&camsys CLK_CAM_CAM>, > > + <&camsys CLK_CAM_CAMTG>; > > + clock-names = "CAMSYS_CAM_CGPDN", > > + "CAMSYS_CAMTG_CGPDN"; > > + mediatek,larb = <&larb3>, > > + <&larb6>; > > + mediatek,scp = <&scp>; > > + memory-region = <&cam_mem_reserved>; > > + }; > > + > > +Reserved memory specific DT entry (see reserved memory binding for more > > +information): > > + > > +Example: > > +SoC specific DT entry: > > + > > + cam_mem_reserved: cam_mem_region { > > + compatible = "mediatek,reserve-memory-cam-smem"; > > + no-map; > > + size = <0 0x01400000>; / *20 MB share mem size */ > > + alignment = <0 0x1000>; > > + alloc-ranges = <0 0x40000000 0 0x10000000>; > > + }; > > + > > +Mediatek ISP P1 supports a single port node with MIPI-CSI2 bus. It should > > +contain one 'port' child node with child 'endpoint' node. Please refer to > > +the bindings defined in Documentation/devicetree/bindings/media/video-interfaces.txt > > +and Documentation/devicetree/bindings/media/mediatek-seninf.txt. > > + > > +Example: > > +Board specific DT entry: > > Don't split examples like this. > Ok, we will keep one example in next patch. Best regards, Jungo > > + > > + &camisp { > > + port@0 { > > + seninf_0: endpoint { > > + remote-endpoint = <&seninf_core>; > > + }; > > + }; > > + }; > > + > > -- > > 2.18.0 > > > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-mediatek