linux-kernel - Re: [RFC V2 5/5] arm64: dts: imx8mm-evk: Enable OV5640 Camera

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Message-ID: <YXn9aibI1C/+eP5L@pendragon.ideasonboard.com>
Date:   Thu, 28 Oct 2021 04:31:22 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Adam Ford <aford173@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        cstevens@...conembedded.com, aford@...conembedded.com,
        Rob Herring <robh+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>,
        NXP Linux Team <linux-imx@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC V2 5/5] arm64: dts: imx8mm-evk: Enable OV5640 Camera

Hi Adam,

Thank you for the patch.

On Sat, Oct 23, 2021 at 03:34:56PM -0500, Adam Ford wrote:
> The schematic shows support for a camera interface, and the NXP
> kernel shows it is an OV5640.

The camera is an external module though. Should this be a DT overlay ?

> Signed-off-by: Adam Ford <aford173@...il.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> index e033d0257b5a..27217d30b8d8 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> @@ -239,6 +239,10 @@ ldo6_reg: LDO6 {
>  	};
>  };
>  
> +&csi {
> +	status = "okay";
> +};
> +
>  &i2c2 {
>  	clock-frequency = <400000>;
>  	pinctrl-names = "default";
> @@ -287,6 +291,38 @@ pca6416: gpio@20 {
>  		gpio-controller;
>  		#gpio-cells = <2>;
>  	};
> +
> +	camera@3c {
> +		compatible = "ovti,ov5640";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_ov5640>;
> +		reg = <0x3c>;
> +		clocks = <&clk IMX8MM_CLK_CLKO1>;
> +		clock-names = "xclk";
> +		assigned-clocks = <&clk IMX8MM_CLK_CLKO1>;
> +		assigned-clock-parents = <&clk IMX8MM_CLK_24M>;
> +		assigned-clock-rates = <24000000>;
> +		powerdown-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
> +		reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
> +
> +		port {
> +			/* MIPI CSI-2 bus endpoint */
> +			ov5640_to_mipi_csi2: endpoint {
> +				remote-endpoint = <&imx8mm_mipi_csi_in>;
> +				clock-lanes = <0>;
> +				data-lanes = <1 2>;
> +			};
> +		};
> +	};
> +};
> +
> +&imx8mm_mipi_csi_in {
> +	remote-endpoint = <&ov5640_to_mipi_csi2>;
> +	data-lanes = <1 2>;
> +};
> +
> +&mipi_csi2 {
> +	status = "okay";
>  };
>  
>  &sai3 {
> @@ -406,6 +442,14 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA			0x400001c3
>  		>;
>  	};
>  
> +	pinctrl_ov5640: ov5640grp {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_GPIO1_IO07_GPIO1_IO7		0x19
> +			MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6		0x19
> +			MX8MM_IOMUXC_GPIO1_IO14_CCMSRCGPCMIX_CLKO1	0x59
> +		>;
> +	};
> +
>  	pinctrl_pmic: pmicirqgrp {
>  		fsl,pins = <
>  			MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3		0x141

-- 
Regards,

Laurent Pinchart