[PATCH 3/4] ARM: dts: imx6ul-14x14-evk: Describe the KSZ8081 reset

Fabio Estevam festevam at gmail.com
Fri Mar 12 11:34:45 GMT 2021


Hi Joakim,

On Thu, Mar 11, 2021 at 8:33 AM Joakim Zhang <qiangqing.zhang at nxp.com> 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



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