From: Zefir Kurtisi <zefir.kurt...@neratec.com> Date: Mon, 24 Oct 2016 12:40:54 +0200
> In SGMII mode, we observed an autonegotiation issue > after power-down-up cycles where the copper side > reports successful link establishment but the > SGMII side's link is down. > > This happened in a setup where the at8031 is > connected over SGMII to a eTSEC (fsl gianfar), > but so far could not be reproduced with other > Ethernet device / driver combinations. > > This commit adds a wrapper function for at8031 > that in case of operating in SGMII mode double > checks SGMII link state when generic aneg_done() > succeeds. It prints a warning on failure but > intentionally does not try to recover from this > state. As a result, if you ever see a warning > '803x_aneg_done: SGMII link is not ok' you will > end up having an Ethernet link up but won't get > any data through. This should not happen, if it > does, please contact the module maintainer. > > Signed-off-by: Zefir Kurtisi <zefir.kurt...@neratec.com> Applied.
