linux-kernel - Re: [PATCH 3/8] ARM: dts: armada-388-clearfog: Utilize new DSA binding

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Message-ID: <87k2a9d5u2.fsf@free-electrons.com>
Date:   Thu, 05 Jan 2017 13:55:17 +0100
From:   Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        vivien.didelot@...oirfairelinux.com,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        "open list\:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/8] ARM: dts: armada-388-clearfog: Utilize new DSA binding

Hi Florian,
 
 On mer., janv. 04 2017, Florian Fainelli <f.fainelli@...il.com> wrote:

> On 01/04/2017 09:23 AM, Gregory CLEMENT wrote:
>> Hi Florian,
>>  
>>  On lun., janv. 02 2017, Florian Fainelli <f.fainelli@...il.com> wrote:
>> 
>>> Utilize the new DSA binding, introduced with commit 8c5ad1d6179d ("net:
>>> dsa: Document new binding"). The legacy binding node is kept included, but is
>>> marked disabled.
>>>
>> 
>> I tested this patch on mvebu/dt (I needed to reduce the context to apply
>> the patch due to the changes made by Russell King on this file). I also
>> set the status of the old binding to "disable" (instead of "okay").
>
> Yes, that needs fixing, thanks for mentioning that.
>
>> 
>> It seems to work with the limited test did:
>> ifconfig eth1 up
>> udhcpc -i lan1
>> iperf -c mylaptop
>> 
>> (same for lan4)
>> 
>> However is there a way to be sure that the new binding is used?
>
> The best way is probably to make sure that your switch device appears
> parented to the MDIO bus driver under /sys/class/mdio_bus/*mvmdio*.
> Alternatively, if you see a message like:
>
> DSA: switch 0 0 parsed
>
> in your dmesg, that would also be indicative of using the new binding
> and corresponding code.

So it's OK I had this message.

Gregory


>
> Thanks a lot for trying that out!
> -- 
> Florian

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com