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From: "Krzysztof Hałasa" <khalasa@piap.pl>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: netdev <netdev@vger.kernel.org>,
	 Oliver Neukum <oneukum@suse.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	 "David S. Miller" <davem@davemloft.net>,
	 Eric Dumazet <edumazet@google.com>,
	 Jakub Kicinski <kuba@kernel.org>,
	 Paolo Abeni <pabeni@redhat.com>, <linux-usb@vger.kernel.org>,
	 <linux-kernel@vger.kernel.org>,
	 Jose Ignacio Tornos Martinez <jtornosm@redhat.com>,
	 Ming Lei <ming.lei@redhat.com>
Subject: Re: [PATCH REPOST] usbnet: asix: leave the carrier control to phylink
Date: Tue, 08 Apr 2025 13:55:49 +0200	[thread overview]
Message-ID: <m3tt6ydfzu.fsf@t19.piap.pl> (raw)
In-Reply-To: <Z_PVOWDMzmLObRM6@pengutronix.de> (Oleksij Rempel's message of "Mon, 7 Apr 2025 15:38:01 +0200")

Oleksij,

thanks for your fast response.

Oleksij Rempel <o.rempel@pengutronix.de> writes:

> Good point, this artifact should be partially removed, but not for all
> devices.  Only ax88772 are converted to PHYlink. ax88178 are not
> converted.

There is also AX88172. I assume the situation with 172 and 178 is
similar.

> The AX88772 portion of the driver, is not forwarding the interrupt to
> the PHY driver. It means, PHY is in polling mode. As long as PHY
> provides proper information, it will work.

It does, yes.

> On other hand, you seems to use AX88772B in 100BASE-FX mode. I'm sure,
> current PHY driver for this device do not know anything about FX mode:
> drivers/net/phy/ax88796b.c
>
> Which 100BASE-FX PHY  capable device do you use? Is it possible to buy
> it some where?

No, it's a part of custom hw, but the carrier problem seems to be
independent of the actual PHY type. The PHY code needs a bit of fixing
as well, though (one can't really enable autoneg with 100BASE-FX).

Will attach a version with 8817x parts removed.
-- 
Krzysztof "Chris" Hałasa

Sieć Badawcza Łukasiewicz
Przemysłowy Instytut Automatyki i Pomiarów PIAP
Al. Jerozolimskie 202, 02-486 Warszawa

  reply	other threads:[~2025-04-08 11:55 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-07 12:08 [PATCH REPOST] usbnet: asix: leave the carrier control to phylink Krzysztof Hałasa
2025-04-07 13:38 ` Oleksij Rempel
2025-04-08 11:55   ` Krzysztof Hałasa [this message]
2025-04-08 11:59     ` [PATCH v2] usbnet: asix AX88772: " Krzysztof Hałasa
2025-04-08 15:22       ` Jakub Kicinski
2025-04-10 12:14       ` Oleksij Rempel
2025-04-11  2:20       ` patchwork-bot+netdevbpf
2025-04-08 13:29 ` [PATCH REPOST] usbnet: asix: " Paolo Abeni
2025-04-09  9:07   ` Krzysztof Hałasa

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