linux-kernel - Re: [PATCH 4/5] arm: dts: imx287: Provide description for MTIP L2 switch

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Message-ID: <40c6c272-d4a3-4bf2-87a1-17086d96afea@lunn.ch>
Date: Tue, 25 Mar 2025 16:14:09 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Lukasz Majewski <lukma@...x.de>
Cc: 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>,
	Paolo Abeni <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>, davem@...emloft.net,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Richard Cochran <richardcochran@...il.com>, netdev@...r.kernel.org,
	Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH 4/5] arm: dts: imx287: Provide description for MTIP L2
 switch

On Tue, Mar 25, 2025 at 12:57:35PM +0100, Lukasz Majewski wrote:
> This description is similar to one supprted with the cpsw_new.c
> driver.
> 
> It has separated ports and PHYs (connected to mdio bus).
> 
> Signed-off-by: Lukasz Majewski <lukma@...x.de>
> ---
>  arch/arm/boot/dts/nxp/mxs/imx28-xea.dts | 56 +++++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/nxp/mxs/imx28-xea.dts b/arch/arm/boot/dts/nxp/mxs/imx28-xea.dts
> index 6c5e6856648a..e645b086574d 100644
> --- a/arch/arm/boot/dts/nxp/mxs/imx28-xea.dts
> +++ b/arch/arm/boot/dts/nxp/mxs/imx28-xea.dts
> @@ -5,6 +5,7 @@
>   */
>  
>  /dts-v1/;
> +#include<dt-bindings/interrupt-controller/irq.h>
>  #include "imx28-lwe.dtsi"
>  
>  / {
> @@ -18,6 +19,61 @@ &can0 {
>  	status = "okay";
>  };
>  
> +&eth_switch {
> +	compatible = "fsl,imx287-mtip-switch";

The switch is part of the SoC. So i would expect the compatible to be
in the .dtsi file for the SoC.

> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mac0_pins_a>, <&mac1_pins_a>;
> +	phy-supply = <&reg_fec_3v3>;
> +	phy-reset-duration = <25>;
> +	phy-reset-post-delay = <10>;
> +	interrupts = <100>, <101>, <102>;
> +	clocks = <&clks 57>, <&clks 57>, <&clks 64>, <&clks 35>;
> +	clock-names = "ipg", "ahb", "enet_out", "ptp";

Which of these properties are SoC properties? I _guess_ interrupts,
clocks and clock-names. So they should be in the SoC .dtsi file. You
should only add board properties here.

       Andrew