On Thu, May 26, 2022 at 05:03:47PM +0800, Tan Tee Min wrote: > There is a limitation in TI DP83867 PHY device where SGMII AN is only > triggered once after the device is booted up. Even after the PHY TPI is > down and up again, SGMII AN is not triggered and hence no new in-band > message from PHY to MAC side SGMII. > > This could cause an issue during power up, when PHY is up prior to MAC. > At this condition, once MAC side SGMII is up, MAC side SGMII wouldn`t > receive new in-band message from TI PHY with correct link status, speed > and duplex info. > > As suggested by TI, implemented a SW solution here to retrigger SGMII > Auto-Neg whenever there is a link change. Is there a bit in the PHY which reports host side link? There is no point triggering an AN if there is already link. Andrew