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Subject[PATCH RFCv2 0/6] net: phy: Ethernet PHY powerdown optimization
This is v2 of an RFC sent earlier [1] to reduce power consumption of network
PHYs with link that are either unused or the corresponding netdev is down.

In contrast to RFCv1, this now integrates phy_suspend/phy_resume transparent
to the netdev drivers. Also, phy_suspend now only suspends the PHY if WOL is
disabled. Moreover, the phy state machine calls phy_suspend on entering
HALTED state.

Again, a branch with RFCv2 applied to v3.13-rc2 can also be found at topic/ethphy-power-rfc-v2


Sebastian Hesselbarth (6):
net: mv643xx_eth: properly start/stop phy device
net: phy: marvell: provide genphy suspend/resume
net: phy: provide phy_resume/phy_suspend helpers
net: phy: resume/suspend PHYs on attach/detach
net: phy: suspend unused PHYs on mdio_bus in late_initcall
net: phy: suspend phydev when going to HALTED

drivers/net/ethernet/marvell/mv643xx_eth.c | 4 +++-
drivers/net/phy/marvell.c | 22 ++++++++++++++++++++++
drivers/net/phy/mdio_bus.c | 25 +++++++++++++++++++++++++
drivers/net/phy/phy.c | 6 +++++-
drivers/net/phy/phy_device.c | 27 +++++++++++++++++++++++++++
include/linux/phy.h | 2 ++
6 files changed, 84 insertions(+), 2 deletions(-)

Cc: David Miller <>
Cc: Florian Fainelli <>
Cc: Mugunthan V N <>

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