netdev - Re: tn40xx / qt2025: cannot load firmware, error -2

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Message-ID: <9aede328-4050-4505-83a5-c0eeb67d1fc5@lunn.ch>
Date: Tue, 4 Mar 2025 18:55:02 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Max Schulze <max.schulze@...ine.de>
Cc: FUJITA Tomonori <fujita.tomonori@...il.com>, hfdevel@....net,
	netdev@...r.kernel.org
Subject: Re: tn40xx / qt2025: cannot load firmware, error -2

> Shouldn't ethtool -m report something?

> > $ sudo ethtool -m enp3s0
> > netlink error: Operation not supported

That ethtool op is missing, along with a lot more, in order to get
full support of the hardware. 

> Does it really only support 10GBe, and not 1GBe or 100BaseSX ?
> > $ sudo ethtool enp3s0
> > Settings for enp3s0:
> > 	Supported ports: [  ]
> > 	Supported link modes:   10000baseSR/Full
> > 	Supported pause frame use: No
> > 	Supports auto-negotiation: No
> > 	Supported FEC modes: Not reported
> > 	Advertised link modes:  10000baseSR/Full
> > 	Advertised pause frame use: No
> > 	Advertised auto-negotiation: No
> > 	Advertised FEC modes: Not reported
> > 	Speed: 10000Mb/s
> > 	Duplex: Full
> > 	Auto-negotiation: off
> > 	Port: Twisted Pair
> > 	PHYAD: 1
> > 	Transceiver: external
> > 	MDI-X: Unknown
> > 	Link detected: yes

>From my reading of the PHY datasheet, it can do 1000Base-KX, but there
is no mention of 100BaseSX. There is also limited access to the i2c
eeprom in the SFP, so ethtool -m could be implemented.

       Andrew