linux-kernel - Re: [PATCH 2/2] ARM: dts: Add the ethernet and ethernet PHY to the cygnus core DT.

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Message-ID: <f870339f-2fa1-411d-5ce8-adbe8802d8a8@cogentembedded.com>
Date:   Tue, 25 Apr 2017 12:40:08 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Eric Anholt <eric@...olt.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>
Subject: Re: [PATCH 2/2] ARM: dts: Add the ethernet and ethernet PHY to the
 cygnus core DT.

Hello.

On 4/25/2017 12:50 AM, Eric Anholt wrote:

> Cygnus has a single amac controller connected to the B53 switch with 2
> PHYs.  On the BCM911360_EP platform, those two PHYs are connected to
> the external ethernet jacks.

    My spell checker trips on "amac" and "ethernet" -- perhaps they need 
capitalization?

> Signed-off-by: Eric Anholt <eric@...olt.net>
> ---
>  arch/arm/boot/dts/bcm-cygnus.dtsi      | 60 ++++++++++++++++++++++++++++++++++
>  arch/arm/boot/dts/bcm911360_entphn.dts |  8 +++++
>  2 files changed, 68 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi
> index 009f1346b817..318899df9972 100644
> --- a/arch/arm/boot/dts/bcm-cygnus.dtsi
> +++ b/arch/arm/boot/dts/bcm-cygnus.dtsi
> @@ -142,6 +142,56 @@
>  			interrupts = <0>;
>  		};
>
> +		mdio: mdio@...02000 {
> +			compatible = "brcm,iproc-mdio";
> +			reg = <0x18002000 0x8>;
> +			#size-cells = <1>;
> +			#address-cells = <0>;
> +
> +			gphy0: eth-gphy@0 {

    The node anmes must be generic, the DT spec has standardized 
"ethernet-phy" name for this case.

> +				reg = <0>;
> +				max-speed = <1000>;
> +			};
> +
> +			gphy1: eth-gphy@1 {
> +				reg = <1>;
> +				max-speed = <1000>;
> +			};
> +		};
[...]
> @@ -295,6 +345,16 @@
>  			status = "disabled";
>  		};
>
> +		eth0: enet@...42000 {
> +			compatible = "brcm,amac";
> +			reg = <0x18042000 0x1000>,
> +			      <0x18110000 0x1000>;
> +			reg-names = "amac_base", "idm_base";

    I don't think "_base" suffixes are necessary here.

[...]

MBR, Sergei