linux-kernel - Re: [PATCH net-next] net: phy: micrel: add Asym Pause workaround

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Message-ID: <b864edfa-9876-4905-1fbb-55c31ad50deb@gmail.com>
Date:   Tue, 16 Apr 2019 16:46:29 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        andrew@...n.ch, hkallweit1@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, nicolas.ferre@...rochip.com,
        ludovic.desroches@...rochip.com, alexandre.belloni@...tlin.com
Subject: Re: [PATCH net-next] net: phy: micrel: add Asym Pause workaround



On 16/04/2019 03:10, Antoine Tenart wrote:
> The Micrel KSZ9031 PHY may fail to establish a link when the Asymmetric
> Pause capability is set. This issue is described in a Silicon Errata
> (DS80000691D or DS80000692D), which advises to always disable the
> capability. This patch implements the workaround by defining a KSZ9031
> specific get_feature callback to force the Asymmetric Pause capability
> bit to be cleared.
> 
> This fixes issues where the link would not come up at boot time, or when
> the Asym Pause bit was set later on.
> 
> Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian