Re: Aquantia PHY in OCSGMII mode?
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
Date: 2025-08-01 11:58:33
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On Fri, Aug 01, 2025 at 01:54:29PM +0200, Alexander Wilhelm wrote:
Am Fri, Aug 01, 2025 at 02:01:06PM +0300 schrieb Vladimir Oltean:quoted
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.
Which MAC driver, and is it using phylink? phylib doesn't know about rate matching, so either you need to replicate much of what phylink does, or make sure the MAC driver uses phylink. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!