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

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Message-ID: <CAFBinCBefuCvTL0E_zf=EQDLyTjE5sQD-TkHNj2vQ2UOCsmtkA@mail.gmail.com>
Date:   Tue, 23 Jul 2019 21:56:43 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Kevin Hilman <khilman@...libre.com>,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: meson8b: add ethernet fifo sizes

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