linux-kernel - Re: [PATCH] ARM: dts: meson8b: add ethernet fifo sizes

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Message-ID: <b5ad180d-af13-cc37-87da-1aa72f10f518@aplu.fr>
Date:   Sun, 4 Aug 2019 21:38:09 +0200
From:   Aymeric <mulx@...u.fr>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Jerome Brunet <jbrunet@...libre.com>
Cc:     Kevin Hilman <khilman@...libre.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: meson8b: add ethernet fifo sizes


Le 23/07/2019 à 21:56, Martin Blumenstingl a écrit :
> On Thu, Jul 18, 2019 at 11:36 AM Jerome Brunet <jbrunet@...libre.com> wrote:
>> If unspecified in DT, the fifo sizes are not automatically detected by
>> the dwmac1000 dma driver and the reported fifo sizes default to 0.
>> Because of this, flow control will be turned off on the device.
>>
>> Add the fifo sizes provided by the datasheet in the SoC in DT so
>> flow control may be enabled if necessary.
>>
>> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
>
> I wonder if this "fixes" some of the performance issues on Odroid-C1
> testing this is now on my TODO-list for the weekend


Good! and maybe that will fix the stability issue I'm seeing when using
the board with a 1 gigabit link! (cf
http://lists.infradead.org/pipermail/linux-amlogic/2019-June/012341.html)

I'll try that asap on my board too :)

Thanks.

-- 
Aymeric