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

From: Lukasz Majewski
Date: Tue Mar 25 2025 - 12:18:25 EST


Hi Andrew,

> 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@xxxxxxx>
> > ---
> > 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.

Ok.

I'm also wondering if I shall use "fsl," or "nxp," prefix. The former
one is the same as in fec_main.c, but as I do add new driver, the
prefix could be updated.

>
> > + 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.

Ok. I will add them.

>
> Andrew

Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH, Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@xxxxxxx

Attachment: pgplukqo84b8q.pgp
Description: OpenPGP digital signature