linux-kernel - Re: [PATCH] ARM64: dts: meson-axg: fix ethernet stability issue

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Message-ID: <d59a60d1-d5fc-6d89-f89b-148c8e3f3521@baylibre.com>
Date:   Tue, 26 Jun 2018 10:07:26 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Carlo Caione <carlo@...one.org>
Cc:     devicetree@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM64: dts: meson-axg: fix ethernet stability issue

On 25/06/2018 14:56, Jerome Brunet wrote:
> Like the odroid-c2 and wetek, the s400 uses the RTL8211F and seems to
> suffer from the kind of stability issue.
> 
> Doing an iperf3 download test, we can see a significant number of LPI
> interrupts on the tx path. After a short while (5 to 15 seconds), the
> network connection dies. If using rootfs over NFS, the connection may
> also break during the boot sequence.
> 
> We still don't have a real explanation for this problem so let's disable
> EEE once again.
> 
> Fixes: f6f6ac914b82 ("ARM64: dts: meson-axg: enable ethernet for A113D S400 board")
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-axg-s400.dts | 15 ++++++++++++++-
>  1 file changed, 14 insertions(+), 1 deletion(-)
> 
[...]
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>