On 08/01/2017 10:27 AM, Andrew Lunn wrote: >> If the MAC does not support EEE but the PHY does I think you can still >> allow EEE to be advertised and enabled, you just won't have the MAC be >> able to leverage the power savings that EEE brings. AFAICT this is still >> a valid mode whereby the PHY is put in a lower power mode, just not the >> whole transmit path (MAC + PHY). > > Hi Florian > > I read a couple of datasheets for a few phys doing EEE. Both said the > same, the MAC has to indicate to the PHY when low power should be > entered and existed. The PHY itself does not appear to do anything on > its own.
Oh you are right, the LPI signal has to come from the MAC for the PHY to decide how to do the idle signaling, my bad. > > It would be good to read the standards about this. But i don't think > we should tell userspace EEE is enabled, if the PHY has it enabled, > but the MAC is not capable and hence EEE is not actually being used at > all. -- Florian
