5 Replies Latest reply on Jun 20, 2018 2:35 PM by Carlos_A

    82574 auto-negotiation fails

    dileep Green Belt

      We have a board of our own design with an Intel 82574 ethernet controller connected to a SST25VF040B serial flash. We have programmed the flash with the image available at document # 377520, altering only the MAC address, LED settings, and checksum. When we boot into u-boot, the ethernet controller is recognized by the e1000 driver (and displays the correct MAC address, so we know the flash was programmed correctly), but the driver times out whenever it tries to run auto-negotiation. Is this a known issue?

       

      We're also curious whether there is a way to read/write the PHY registers from u-boot. Using `pci display` we have only been able to read the NVM settings.

       

      Thank you!