netdev - Re: [PATCH net-next v2 00/11] net: bcmgenet: PM and Wake-on-LAN

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Message-ID: <CAGVrzcbjA5mvQdoCMdaa8HixKLQ5zOBWpDuoL7Zjzguqj6rpwA@mail.gmail.com>
Date:	Tue, 22 Jul 2014 13:29:37 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	netdev <netdev@...r.kernel.org>, David Miller <davem@...emloft.net>
Subject: Re: [PATCH net-next v2 00/11] net: bcmgenet: PM and Wake-on-LAN

Hi,

2014-07-22 13:20 GMT-07:00 Francois Romieu <romieu@...zoreil.com>:
> Florian Fainelli <f.fainelli@...il.com> :
> [...]
>> This patchset brings S2/S3 Power Management support to the GENET driver
>> as well as Wake-on-LAN using Magic Packets with or without SecureOn
>> passwords.
>
> Out of curiosity, do you have a plan to support runtime power suspend,
> say through phy_driver.link_change_notify ?

The internal PHY (drivers/net/phy/bcm7xxx.c) used in conjunction with
the GENET or SYSTEMPORT adapters features auto-power down on link
down, which is where we get most of the power savings.

The remaining digital logic is not too power hungry, but I like your
idea, and will do some testing whether we can save some more power.

Thanks!
-- 
Florian
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