topic Re: EQOS mac (imx-dwmac driver) freezes the system when bridge is configured in Processor Expert Software

EQOS mac (imx-dwmac driver) freezes the system when bridge is configured

RenePinto — Thu, 16 Feb 2023 11:39:25 GMT

I'm working on two different boards with i.MX8MP:

1) Board A uses a DP83867 PHY

2) Board B uses an Atheros AR803x PHY

Both works out of the box in a default setup. However, when I try to configure a bridge and assign the eqos interface (eth1) to the bridge, the whole system freezes (no kernel crash messages, nothing, just freezes...).

The problem was observed with two different BSPs and different kernel versions: 5.10. 5.15 and 6.2

Steps to reproduce it's pretty simple, just try to configure a bridge and assign eth1 to it. During the startup, when interface is being configured, the system freezes.

Re: EQOS mac (imx-dwmac driver) freezes the system when bridge is configured

markusm — Wed, 22 Mar 2023 15:21:57 GMT

I am having a similar issue. Did you manage to resolve it?

Re: EQOS mac (imx-dwmac driver) freezes the system when bridge is configured

RenePinto — Wed, 22 Mar 2023 15:42:09 GMT

Yes@markusm ,my workaround was to let clocks enabled in stmmac_dvr_probe(). You can take a look here:

https://github.com/lf-edge/eve/pull/3085/commits/b417dacaa68de132d85171d5aa88e6c59fa76b03#diff-ce01c8460fa872fe79f3bd7b9e80e809ec7db3fd6ba4e6d3b990ae2305b5cd6c

And to make bridge work properly I also applied this patch (took from this forum):

https://github.com/lf-edge/eve/pull/3085/commits/b417dacaa68de132d85171d5aa88e6c59fa76b03#diff-122b226802028bfbac4fc63f9ee3cf6ab843e54b458a6e7e1713b047bfffccdb