Re: [PATCH net-next V2 2/2] net: axienet: Add support for 2500base-X only configuration.

From: Andrew Lunn
Date: Wed Mar 12 2025 - 10:59:14 EST


> > On Wed, Mar 12, 2025 at 02:25:27PM +0100, Andrew Lunn wrote:
> > > > + /* AXI 1G/2.5G ethernet IP has following synthesis options:
> > > > + * 1) SGMII/1000base-X only.
> > > > + * 2) 2500base-X only.
> > > > + * 3) Dynamically switching between (1) and (2), and is not
> > > > + * implemented in driver.
> > > > + */

> - Keeping previous discussion short, identification of (3) depends
> on how user implements switching logic in FPGA (external GT or RTL
> logic). AXI 1G/2.5G IP provides only static speed selections and
> there is no standard register to communicate that to software.

So if anybody has synthesised it as 3) this change will break their
system?

Andrew