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Silvan's avatar
Silvan
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

High-Latency Ethernet on Arria 10 SoC device using HPS EMAC and KSZ9031

Hello, I observe a strange issue using the 1Gbps Ethernet on the Arria 10 SoC HPS. I observe the issue on our custom board and also on the Arria 10 Dev Kit. For simpler debugging, explanation and po...
Arm Processor
Sw Development
rgthomas's avatar
rgthomas
Icon for New Contributor rankNew Contributor
1 year ago

Hi Silvan,

Thanks for sharing the update — glad to hear the patch resolves the issue. It seems the EMACs in Cyclone V, Arria 10, and Agilex7 exhibit this behavior. We'll follow up with Synopsys for further clarification.

We're planning to integrate the workaround in our next quarterly release. If you're considering upstreaming it to the mainline Linux kernel, you're welcome to do so. Just make sure to update the commit subject and description according to the upstream guidelines (currently, commit message is written as a workaround), and also please ensure the patch adheres to kernel coding standards.

Also, please let us know if you observe any regressions during your testing.

Best regards,
Rohan