Am Fri, Aug 01, 2025 at 02:01:06PM +0300 schrieb Vladimir Oltean:

On Thu, Jul 31, 2025 at 08:26:43PM +0100, Russell King (Oracle) wrote:

quoted

and this works. So... we could actually reconfigure the PHY independent
of what was programmed into the firmware.

It does work indeed, the trouble will be adding this code to the common
mainline kernel driver and then watching various boards break after their
known-good firmware provisioning was overwritten, from a source of unknown
applicability to their system.

You're right. I've now selected a firmware that uses a different provisioning
table, which already configures the PHY for 2500BASE-X with Flow Control.
According to the documentation, it should support all modes: 10M, 100M, 1G, and
2.5G.

It seems the issue lies with the MAC, as it doesn't appear to handle the
configured PHY_INTERFACE_MODE_2500BASEX correctly. I'm currently investigating
this further.


Best regards
Alexander Wilhelm