On 27.08.2020 13:00, Rasmus Villemoes wrote: > On 27/08/2020 12.29, Heiner Kallweit wrote: >> On 27.08.2020 12:08, Rasmus Villemoes wrote: >>> Hi, >>> >>> We have a requirement that when an interface is taken down >>> administratively, the phy should be powered off. That also works when >>> the interface has link when the 'ip link set down ...' is run. But if >>> there's no cable plugged in, the phy stays powered on (as can be seen >>> both using phytool, and from the fact that a peer gets carrier once a >>> cable is later plugged in). >>> >>> Is this expected behaviour? Driver/device dependent? Can we do anything >>> to force the phy off? >>> >> This may be MAC/PHY-driver dependent. Which driver(s) do we talk about? > > It's a Marvell 88e6250 switch (drivers/net/dsa/mv88e6xxx/). > >> Also it may depend on whether Runtime PM is active for a PCI network >> device. In addition WoL should be disabled. > > The datasheet does mention WoL, but it's either not hooked up in the > driver or at least default disabled, ethtool says > > Supports Wake-on: d > Wake-on: d >
By the way, which kernel version are you using? > Thanks, > Rasmus >
