linux-kernel - Re: [PATCH 1/2] media: dt-bindings: Add CSI Pixel Formatter DT bindings

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Message-ID: <aTBtpOpsMSmezIcL@lizhi-Precision-Tower-5810>
Date: Wed, 3 Dec 2025 12:04:36 -0500
From: Frank Li <Frank.li@....com>
To: Guoniu Zhou <guoniu.zhou@....nxp.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	imx@...ts.linux.dev, linux-media@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Guoniu Zhou <guoniu.zhou@....com>
Subject: Re: [PATCH 1/2] media: dt-bindings: Add CSI Pixel Formatter DT
 bindings

On Wed, Dec 03, 2025 at 02:30:02PM +0800, Guoniu Zhou wrote:
> From: Guoniu Zhou <guoniu.zhou@....com>
>
> The i.MX9 CSI pixel formatting module uses packet info, pixel and
> non-pixel data from the CSI-2 host controller and reformat them to
> match Pixel Link(PL) definition.
>
> Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
> ---
>  .../bindings/media/nxp,imx9-csi-formatter.yaml     | 96 ++++++++++++++++++++++
>  1 file changed, 96 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml b/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..c992a2a225519d3b7934f48cf1646d2cd7089319
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/nxp,imx9-csi-formatter.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: i.MX9 CSI Pixel Formatter
> +
> +maintainers:
> +  - Guoniu Zhou <guoniu.zhou@....com>
> +
> +description: |

needn't |

> +  The CSI pixel formatting module uses packet info, pixel and non-pixel
> +  data from the CSI-2 host controller and reformat them to match Pixel
> +  Link(PL) definition.
> +
> +properties:
> +  compatible:
> +    const: fsl,imx9-csi-formatter
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    maxItems: 1
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: MIPI CSI-2 RX IDI interface
> +
> +        properties:
> +          endpoint:
> +            $ref: video-interfaces.yaml#
> +            unevaluatedProperties: false
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Pixel Link Interface
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - power-domains
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/nxp,imx95-clock.h>
> +
> +    /*
> +     * Power domain definitions from arch/arm64/boot/dts/freescale/imx95-power.h
> +     */
> +
> +    #define IMX95_PD_CAMERA		3
> +
> +    formatter@20 {
> +        compatible = "fsl,imx9-csi-formatter";
> +        reg = <0x20 0x100>;
> +        clocks = <&cameramix_csr IMX95_CLK_CAMBLK_CSI2_FOR0>;
> +        clock-names = "pixel";
> +        power-domains = <&scmi_devpd IMX95_PD_CAMERA>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;

need empty line between child node and property.

> +                formatter_in: endpoint {

Needn't label here

Frank
> +                    remote-endpoint = <&mipi_csi_0_out>;
> +                };
> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +                formatter_out: endpoint {
> +                    remote-endpoint = <&isi_in_2>;
> +                };
> +            };
> +        };
> +    };
>
> --
> 2.34.1
>