From: David Miller <davem@davemloft.net>
To: dgcbueu@gmail.com
Cc: netdev@vger.kernel.org, thomas.petazzoni@bootlin.com
Subject: Re: [PATCH] net: mvneta: speed down the PHY, if WoL used, to save energy
Date: Wed, 13 May 2020 15:21:33 -0700 (PDT) [thread overview]
Message-ID: <20200513.152133.211500623458865365.davem@davemloft.net> (raw)
In-Reply-To: <32495177.Bv3dSJjO3Z@tool>
From: Daniel González Cabanelas <dgcbueu@gmail.com>
Date: Tue, 12 May 2020 19:59:48 +0200
> Some PHYs connected to this ethernet hardware support the WoL feature.
> But when WoL is enabled and the machine is powered off, the PHY remains
> waiting for a magic packet at max speed (i.e. 1Gbps), which is a waste of
> energy.
>
> Slow down the PHY speed before stopping the ethernet if WoL is enabled,
> and save some energy while the machine is powered off or sleeping.
>
> Tested using an Armada 370 based board (LS421DE) equipped with a Marvell
> 88E1518 PHY.
>
> Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Applied to net-next, thanks.
prev parent reply other threads:[~2020-05-13 22:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-12 17:59 [PATCH] net: mvneta: speed down the PHY, if WoL used, to save energy Daniel González Cabanelas
2020-05-13 22:21 ` David Miller [this message]
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