linux-kernel - Re: [PATCH v2 8/9] arm64: dts: lx2160a-rdb: fully describe the two SFP+ cages

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Message-ID: <aMmUYmIFOsue+rkK@lizhi-Precision-Tower-5810>
Date: Tue, 16 Sep 2025 12:46:26 -0400
From: Frank Li <Frank.li@....com>
To: Ioana Ciornei <ioana.ciornei@....com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Shawn Guo <shawnguo@...nel.org>, Michael Walle <mwalle@...nel.org>,
	Lee Jones <lee@...nel.org>, devicetree@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 8/9] arm64: dts: lx2160a-rdb: fully describe the two
 SFP+ cages

On Mon, Sep 15, 2025 at 03:23:53PM +0300, Ioana Ciornei wrote:
> Describe the two SFP+ cages found on the LX2160ARDB board with their
> respective I2C buses and GPIO lines.
>
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
> ---
> Changes in v2:
> - none
>
>  .../boot/dts/freescale/fsl-lx2160a-rdb.dts    | 47 +++++++++++++++++++
>  1 file changed, 47 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> index 4ede1295f29d..62329a93a67a 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> @@ -31,6 +31,28 @@ sb_3v3: regulator-sb3v3 {
>  		regulator-boot-on;
>  		regulator-always-on;
>  	};
> +
> +	sfp2: sfp-2 {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp2_i2c>;
> +		maximum-power-milliwatt = <2000>;
> +		/* Leave commented out if using DPMAC_LINK_TYPE_FIXED mode */
> +		/* tx-disable-gpios = <&sfp2_csr 0 GPIO_ACTIVE_HIGH>; */
> +		los-gpios = <&sfp2_csr 4 GPIO_ACTIVE_HIGH>;
> +		tx-fault-gpios = <&sfp2_csr 5 GPIO_ACTIVE_HIGH>;
> +		mod-def0-gpios = <&sfp2_csr 7 GPIO_ACTIVE_LOW>;
> +	};
> +
> +	sfp3: sfp-3 {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp3_i2c>;
> +		maximum-power-milliwatt = <2000>;
> +		/* Leave commented out if using DPMAC_LINK_TYPE_FIXED mode */
> +		/* tx-disable-gpios = <&sfp3_csr 0 GPIO_ACTIVE_HIGH>; */
> +		los-gpios = <&sfp3_csr 4 GPIO_ACTIVE_HIGH>;
> +		tx-fault-gpios = <&sfp3_csr 5 GPIO_ACTIVE_HIGH>;
> +		mod-def0-gpios = <&sfp3_csr 7 GPIO_ACTIVE_LOW>;
> +	};
>  };
>
>  &crypto {
> @@ -236,6 +258,31 @@ temperature-sensor@4d {
>  				vcc-supply = <&sb_3v3>;
>  			};
>  		};
> +
> +		i2c@7 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0x7>;

reg should be first property.

> +
> +			i2c-mux@75 {
> +				compatible = "nxp,pca9547";
> +				reg = <0x75>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				sfp2_i2c: i2c@4 {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0x4>;

the same here.

Frank
> +				};
> +
> +				sfp3_i2c: i2c@5 {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0x5>;
> +				};
> +			};
> +		};
>  	};
>  };
>
> --
> 2.25.1
>