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From: Frank Li To: Laurent Pinchart Cc: Mauro Carvalho Chehab , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Rui Miguel Silva , Martin Kepplinger , Purism Kernel Team , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , linux-media@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Alice Yuan Subject: Re: [PATCH 2/5] dt-bindings: media: add i.MX parallel csi support Message-ID: References: <20250630-imx8qxp_pcam-v1-0-eccd38d99201@nxp.com> <20250630-imx8qxp_pcam-v1-2-eccd38d99201@nxp.com> <20250630225340.GE15184@pendragon.ideasonboard.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: AM0PR02CA0178.eurprd02.prod.outlook.com (2603:10a6:20b:28e::15) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: 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X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: XvFtH31Ecqmpt7/fA8G41JYaIPwpp8Fl1c2A9OLSuUIB9Rz2cAXpGiW/8ZU/0zwwAZkD5hb7Gqy2HSwr6lcTaQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR04MB8339 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250701_082707_387116_BDAA6D58 X-CRM114-Status: GOOD ( 35.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jul 01, 2025 at 10:55:32AM -0400, Frank Li wrote: > On Tue, Jul 01, 2025 at 01:53:40AM +0300, Laurent Pinchart wrote: > > Hi Frank, Alice, > > > > Thank you for the patch. > > > > On Mon, Jun 30, 2025 at 06:28:18PM -0400, Frank Li wrote: > > > From: Alice Yuan > > > > > > Document the binding for parallel CSI controller found in i.MX8QXP, i.MX93 > > > and i.MX91 SoCs. > > > > > > Signed-off-by: Alice Yuan > > > Signed-off-by: Frank Li > > > --- > > > .../bindings/media/fsl,imx93-parallel-csi.yaml | 108 +++++++++++++++++++++ > > > MAINTAINERS | 1 + > > > 2 files changed, 109 insertions(+) > > > > > > diff --git a/Documentation/devicetree/bindings/media/fsl,imx93-parallel-csi.yaml b/Documentation/devicetree/bindings/media/fsl,imx93-parallel-csi.yaml > > > new file mode 100644 > > > index 0000000000000..b4657c913adad > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/media/fsl,imx93-parallel-csi.yaml > > > @@ -0,0 +1,108 @@ > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/media/fsl,imx93-parallel-csi.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: i.MX8/9 Parallel Camera Interface > > > + > > > +maintainers: > > > + - Frank Li > > > + > > > +description: | > > > + This is device node for the Parallel Camera Interface which enables the > > > + chip to connect directly to external Parallel CMOS image sensors. > > > + Supports up to 80MHz input clock from sensor. > > > + Supports the following input data formats > > > + - 8-bit/10-bit Camera Sensor Interface (CSI) > > > + - 8-bit data port for RGB, YCbCr, and YUV data input > > > + - 8-bit/10-bit data ports for Bayer data input > > > + Parallel Camera Interface is hooked to the Imaging subsystem via the > > > + Pixel Link. > > > + > > > +properties: > > > + compatible: > > > + oneOf: > > > + - const: fsl,imx8qxp-parallel-csi > > > > Is there any chance we could avoid calling this "csi", given that the > > whole block is called "Parallel Capture Interface" in the reference > > manual ? "CSI" is horribly confusing as it usually refers to MIPI CSI-2. > > I suppose calling it "PCI" for "Parallel Capture Interface" wouldn't > > help :-/ > > PCI is too famous for PCI(Peripheral Component Interconnec) bus. It will be > more confused. > > Can we use pcam? fsl,imx8qxp-pcam > > Frank > > > > > > + - items: > > > + - enum: > > > + - fsl,imx91-parallel-csi > > > + - const: fsl,imx93-parallel-csi > > > + - const: fsl,imx93-parallel-csi > > > + > > > + reg: > > > + maxItems: 1 > > > + > > > + clocks: > > > + maxItems: 2 > > > + > > > + clock-names: > > > + items: > > > + - const: pixel > > > + - const: ipg > > > + > > > + power-domains: > > > + maxItems: 1 > > > + > > > + ports: > > > + $ref: /schemas/graph.yaml#/properties/ports > > > + > > > + properties: > > > + port@0: > > > + $ref: /schemas/graph.yaml#/$defs/port-base > > > + unevaluatedProperties: false > > > + description: > > > + Input port node. > > > + > > > + port@1: > > > + $ref: /schemas/graph.yaml#/$defs/port-base > > > + unevaluatedProperties: false > > > + description: > > > + Output port node. > > > + > > > +required: > > > + - compatible > > > + - reg > > > + - clocks > > > + - clock-names > > > + - ports > > > > Patch 4/5 lists a power domain, and so does the example below for > > i.MX93. Should the power-domains property be mandatory ? > > > > > + > > > +additionalProperties: false > > > + > > > +examples: > > > + - | > > > + #include > > > + #include > > > + > > > + parallel-csi@4ac10070 { > > > + compatible = "fsl,imx93-parallel-csi"; > > > + reg = <0x4ac10070 0x10>; > > > > The i.MX93 reference manual doesn't document the register set for this > > block, so I have a hard time reviewing this. Is there a plan to publish > > a new version of the reference manual with the complete documentation > > for the parallel interface ? Sorry, I missed this part at last email. It already imx93's reference manual, but it is bindle to 82.4.1.1 mediamix_GPR_ctrl memory map BLK_CTRL_MEDIAMIX base address: 4AC1_0000h because it is tail part of this space, we can simple strink mediamix_GPR_ctrl space in dts. I am working on this. Frank > > > > > + clocks = <&clk IMX93_CLK_MIPI_CSI_GATE>, > > > + <&clk IMX93_CLK_MEDIA_APB>; > > > + clock-names = "pixel", "ipg"; > > > + assigned-clocks = <&clk IMX93_CLK_CAM_PIX>; > > > + assigned-clock-parents = <&clk IMX93_CLK_VIDEO_PLL>; > > > + assigned-clock-rates = <140000000>; > > > + power-domains = <&media_blk_ctrl IMX93_MEDIABLK_PD_MIPI_CSI>; > > > + > > > + ports { > > > + #address-cells = <1>; > > > + #size-cells = <0>; > > > + > > > + port@0 { > > > + reg = <0>; > > > + > > > + endpoint { > > > + remote-endpoint = <&mt9m114_ep>; > > > + }; > > > + }; > > > + > > > + port@1 { > > > + reg = <1>; > > > + endpoint { > > > + remote-endpoint = <&isi_in>; > > > + }; > > > + }; > > > + }; > > > + }; > > > +... > > > diff --git a/MAINTAINERS b/MAINTAINERS > > > index 8dc0f6609d1fe..3bd6772c11539 100644 > > > --- a/MAINTAINERS > > > +++ b/MAINTAINERS > > > @@ -15107,6 +15107,7 @@ L: linux-media@vger.kernel.org > > > S: Maintained > > > T: git git://linuxtv.org/media.git > > > F: Documentation/admin-guide/media/imx7.rst > > > +F: Documentation/devicetree/bindings/media/fsl,imx93-parallel-csi.yaml > > > F: Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml > > > F: Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml > > > F: Documentation/devicetree/bindings/media/nxp,imx8mq-mipi-csi2.yaml > > > > -- > > Regards, > > > > Laurent Pinchart