netdev - Re: [PATCH v2 3/4] net: dsa: LAN9303: add I2C managed mode support

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Date:   Mon, 10 Apr 2017 09:58:38 +0200
From:   Juergen Borleis <jbe@...gutronix.de>
To:     kernel@...gutronix.de
Cc:     Andrew Lunn <andrew@...n.ch>, f.fainelli@...il.com,
        vivien.didelot@...oirfairelinux.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH v2 3/4] net: dsa: LAN9303: add I2C managed mode support

Hi Andrew,

On Friday 07 April 2017 15:40:07 Andrew Lunn wrote:
> > +Optional properties:
> > +
> > +- reset-gpios: GPIO to be used to reset the whole device, always low
> > active
>
> I would avoid the always low active comment. The input to the switch
> is active low. But i've seen designs with an inverter in the reset
> path, so from the perspective of the GPIO it would be active high. The
> device tree binding allows for this, via the flags. And since you use
> the gpiod API, it should all just work.
>
> > +		ports {
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +
> > +			port@0 { /* RMII fixed link to master */
> > +				reg = <0>;
> > +				label = "cpu";
> > +				ethernet = <&master>;
> > +			};
> > +
> > +			port@1 { /* external port 1 */
> > +				compatible = "ethernet-phy-ieee802.3-c22";
> > +				reg = <1>;
> > +				label = "lan1;
> > +			};
>
> These are not PHY nodes, so does this compatible string do anything?

I removed them and nothing changed.

Regards,
Juergen

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