> Related is that polling the phy status every second can be bad news for > system latency. > Typically it involves bit-bashing an interface with spin-delays to > meet the slow timings (with extra delays to allow for posted writes). > An alternative would be to do a very slow bit-bang on each timer tick, > this would need to be sped up and finished before any other actions.
Or just use PHY interrupts. That completely stops the MDIO polling. Andrew
