Hi Russell,

On 30/01/2026 17:19, Russell King (Oracle) wrote:

On Tue, Jan 27, 2026 at 02:41:54PM +0100, Maxime Chevallier wrote:

quoted

The SFP bus infrastructure notifies its upstream when a PHY device was
discovered on the module. However, we don't have any indication when a
module with no PHY was inserted, except for the .insert() and .start()
notifications.

That's the way you tell - if you get the .start() callback but you
haven't had a PHY connected, that means there's no PHY.

There should be no need to add this callback, since you shouldn't be
thinking that the module is fully initialised until you have received
the .start() callback.

Ok fair point, thanks for the feedback ! I was about to send V3, but
I'll implement something that doesn't require this new callback then.

Thanks for taking a look :)

Maxime