linux-kernel - Re: [PATCHv1 3/6] ARM: dts: imx6q-bx50v3: Add internal switch

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Date:   Wed, 3 Jan 2018 16:24:52 +0100
From:   Sebastian Reichel <sebastian.reichel@...labora.co.uk>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Ian Ray <ian.ray@...com>, Nandor Han <nandor.han@...com>,
        Rob Herring <robh+dt@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv1 3/6] ARM: dts: imx6q-bx50v3: Add internal switch

Hi,

On Wed, Jan 03, 2018 at 05:48:42PM +0300, Sergei Shtylyov wrote:
> Hello!
> 
> On 01/03/2018 03:26 PM, Sebastian Reichel wrote:
> 
> > B850v3, B650v3 and B450v3 all have a GPIO bit banged MDIO bus to
> > communicate with a Marvell switch. On all devices the switch is
> > connected to a PCI based network card, which needs to be referenced
> > by DT, so this also adds the common PCI root node.
> > 
> > Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
> > ---
> >   arch/arm/boot/dts/imx6q-bx50v3.dtsi | 37 +++++++++++++++++++++++++++++++++++++
> >   1 file changed, 37 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
> > index b915837bbb5f..689981e90e68 100644
> > --- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi
> > +++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
> > @@ -92,6 +92,31 @@
> >   		mux-int-port = <1>;
> >   		mux-ext-port = <4>;
> >   	};
> > +
> > +	aliases {
> > +		mdio-gpio0 = &mdio0;
> > +	};
> > +
> > +	mdio0: mdio-gpio {
> > +		compatible = "virtual,mdio-gpio";
> > +		gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>, /* mdc */
> > +			<&gpio2 7 GPIO_ACTIVE_HIGH>; /* mdio */
> > +
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +
> > +		switch@0 {
> > +				compatible = "marvell,mv88e6240";
> 
>    Why suddenly 2 extra tabs instead of 1?

will be fixed in PATCHv2.

> > +				#address-cells = <1>;
> > +				#size-cells = <0>;
> > +				reg = <0>;
> > +
> > +				switch_ports: ports {
> > +					#address-cells = <1>;
> > +					#size-cells = <0>;
> > +				};
> > +		};
> > +	};
> >   };
> >   &ecspi5 {
> [...]
> 
> MBR, Sergei

-- Sebastian

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