netdev - Re: [RFC PATCH 9/9] dt-bindings: net: dsa: Add documentation for Hellcreek switches

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Message-ID: <20200618134704.GQ249144@lunn.ch>
Date:   Thu, 18 Jun 2020 15:47:04 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Kurt Kanzenbach <kurt@...utronix.de>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Richard Cochran <richardcochran@...il.com>,
        Kamil Alkhouri <kamil.alkhouri@...offenburg.de>,
        ilias.apalodimas@...aro.org
Subject: Re: [RFC PATCH 9/9] dt-bindings: net: dsa: Add documentation for
 Hellcreek switches

> +Ethernet switch connected memory mapped to the host, CPU port wired to gmac0:
> +
> +soc {
> +        switch0: switch@...f240000 {
> +                compatible = "hirschmann,hellcreek";
> +                status = "okay";
> +                reg = <0xff240000 0x1000   /* TSN base */
> +                       0xff250000 0x1000>; /* PTP base */
> +                dsa,member = <0 0>;
> +
> +                ports {
> +                        #address-cells = <1>;
> +                        #size-cells = <0>;
> +
> +                        port@0 {
> +                                reg = <0>;
> +                                label = "cpu";
> +                                ethernet = <&gmac0>;
> +                        };
> +
> +                        port@2 {
> +                                reg = <2>;
> +                                label = "lan0";
> +                                phy-handle = <&phy1>;
> +                        };
> +
> +                        port@3 {
> +                                reg = <3>;
> +                                label = "lan1";
> +                                phy-handle = <&phy2>;
> +                        };
> +                };
> +        };
> +};
> +
> +&gmac0 {
> +        status = "okay";
> +        phy-mode = "mii";
> +
> +        fixed-link {
> +                speed = <100>;
> +                full-duplex;

Hi Kurt

The switch is 100/100Mbps right? The MAC is only Fast ethernet. Do you
need some properties in the port@0 node to tell the switch to only use
100Mbps? I would expect it to default to 1G. Not looked at the code
yet...

	Andrew