linux-kernel - Re: [PATCH 1/2] dt-bindings: media: i2c: Add IMX296 CMOS sensor binding

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Message-ID: <20191015224554.GA5634@bogus>
Date:   Tue, 15 Oct 2019 17:45:54 -0500
From:   Rob Herring <robh@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     mchehab@...nel.org, sakari.ailus@....fi,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        c.barrett@...mos.com, a.brela@...mos.com
Subject: Re: [PATCH 1/2] dt-bindings: media: i2c: Add IMX296 CMOS sensor
 binding

On Fri, Oct 11, 2019 at 09:26:12AM +0530, Manivannan Sadhasivam wrote:
> Add devicetree binding for IMX296 CMOS image sensor.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  .../devicetree/bindings/media/i2c/imx296.txt  | 55 +++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/imx296.txt

You should know by now, use DT schema format please.

> diff --git a/Documentation/devicetree/bindings/media/i2c/imx296.txt b/Documentation/devicetree/bindings/media/i2c/imx296.txt
> new file mode 100644
> index 000000000000..25d3b15162c1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/imx296.txt
> @@ -0,0 +1,55 @@
> +* Sony IMX296 1/2.8-Inch CMOS Image Sensor
> +
> +The Sony IMX296 is a 1/2.9-Inch active pixel type CMOS Solid-state image
> +sensor with square pixel array and 1.58 M effective pixels. This chip features
> +a global shutter with variable charge-integration time. It is programmable
> +through I2C and 4-wire interfaces. The sensor output is available via CSI-2
> +serial data output (1 Lane).
> +
> +Required Properties:
> +- compatible: Should be "sony,imx296"
> +- reg: I2C bus address of the device
> +- clocks: Reference to the mclk clock.
> +- clock-names: Should be "mclk".
> +- clock-frequency: Frequency of the mclk clock in Hz.
> +- vddo-supply: Interface power supply.
> +- vdda-supply: Analog power supply.
> +- vddd-supply: Digital power supply.
> +
> +Optional Properties:
> +- reset-gpios: Sensor reset GPIO
> +
> +The imx296 device node should contain one 'port' child node with
> +an 'endpoint' subnode. For further reading on port node refer to
> +Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +Required Properties on endpoint:
> +- data-lanes: check ../video-interfaces.txt

This should only be required when not using all the lanes on the device.

> +- remote-endpoint: check ../video-interfaces.txt

Don't really need to document this.

> +
> +Example:
> +	&i2c1 {
> +		...
> +		imx296: camera-sensor@1a {
> +			compatible = "sony,imx296";
> +			reg = <0x1a>;
> +
> +			reset-gpios = <&msmgpio 35 GPIO_ACTIVE_LOW>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&camera_rear_default>;
> +
> +			clocks = <&gcc GCC_CAMSS_MCLK0_CLK>;
> +			clock-names = "mclk";
> +			clock-frequency = <37125000>;
> +
> +			vddo-supply = <&camera_vddo_1v8>;
> +			vdda-supply = <&camera_vdda_3v3>;
> +			vddd-supply = <&camera_vddd_1v2>;
> +
> +			port {
> +				imx296_ep: endpoint {
> +					data-lanes = <1>;
> +					remote-endpoint = <&csiphy0_ep>;
> +				};
> +			};
> +		};
> -- 
> 2.17.1
>