linux-kernel - Re: [PATCH net-next v3 1/2] net: phy: marvell10g: implement suspend/resume callbacks

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Date:   Tue, 2 Apr 2019 11:50:17 +0200
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        linux@...linux.org.uk, andrew@...n.ch, f.fainelli@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, maxime.chevallier@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, stefanc@...vell.com, mw@...ihalf.com
Subject: Re: [PATCH net-next v3 1/2] net: phy: marvell10g: implement
 suspend/resume callbacks

Hi Heiner,

Sorry for the late answer.

On Tue, Mar 26, 2019 at 07:43:27PM +0100, Heiner Kallweit wrote:
> On 26.03.2019 15:53, Antoine Tenart wrote:
> > This patch adds the suspend/resume callbacks for Marvell 10G PHYs. The
> > three PCS (base-t, base-r and 1000base-x) are set in low power (the PCS
> > are powered down) when the PHY isn't used.
> > 
> At least for the 3310 the datasheet mentions that via VEND2.f001.11
> the port can be powered down completely. As this would simplify the code,
> did you test this?

I just tested this, and it does simplify the code a lot. Thanks for
pointing out this bit.

I'll update and make a v2.

Antoine

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com