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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Joakim, On Thu, Mar 11, 2021 at 8:33 AM Joakim Zhang wrote: > > > Hi Fabio, Shawn, Andrew, > > I found the root cause is the schematic diagram defect, both ENET1_nRST and ENET2_nRST are connect to ENET_nRST, which means PHY0 and PHY1 can't be hardware reset independently. Revert the patch > "ARM: dts: imx6ul-14x14-evk: Describe the KSZ8081 reset" is not enough, after IO expander probing, Q1/Q2 default is low level, PHY attached would fail. At our local side, give IO expander a default value, but I don't know if it is a common method. If you think it is ok, I can try to upstream that patch. Sorry for the breakage. I have only tested normal operation when I submitted the patch, without putting any interface down. I was able to reproduce the problem and I will submit a patch to fix the problem. Thanks _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel