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

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Message-ID: <CAC3K-4qn5oCXvyMCkFESGqMHqHXGiNUW6wfRx2LUZ8qZ39qroQ@mail.gmail.com>
Date:   Tue, 25 Apr 2017 11:15:43 -0400
From:   Jon Mason <jon.mason@...adcom.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     Eric Anholt <eric@...olt.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Andrew Lunn <andrew@...n.ch>,
        Network Development <netdev@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        BCM Kernel Feedback <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.

On Tue, Apr 25, 2017 at 5:40 AM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> 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.

100% necessary, per the driver.  See
drivers/net/ethernet/broadcom/bgmac-platform.c


>
> [...]
>
> MBR, Sergei
>