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From: Andrew Lunn <andrew@lunn.ch>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: "Heiner Kallweit" <hkallweit1@gmail.com>,
	"Pali Rohár" <pali@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	"Jakub Kicinski" <kuba@kernel.org>,
	netdev@vger.kernel.org
Subject: Re: [PATCH net-next 2/2] net: sfp: relax bitrate-derived mode check
Date: Fri, 4 Dec 2020 16:38:50 +0100	[thread overview]
Message-ID: <20201204153850.GD2400258@lunn.ch> (raw)
In-Reply-To: <E1klCBD-0001si-Qj@rmk-PC.armlinux.org.uk>

On Fri, Dec 04, 2020 at 02:35:27PM +0000, Russell King wrote:
> Do not check the encoding when deriving 1000BASE-X from the bitrate
> when no other modes are discovered. Some GPON modules (VSOL V2801F
> and CarlitoxxPro CPGOS03-0490 v2.0) indicate NRZ encoding with a
> 1200Mbaud bitrate, but should be driven with 1000BASE-X on the host
> side.

Seems like somebody could make a nice side line writing SFP EEPROM
validation tools. There obviously are none in widespread use!

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

  parent reply	other threads:[~2020-12-04 15:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-04 14:34 [PATCH net-next 0/2] Add support for VSOL V2801F/CarlitoxxPro CPGOS03 GPON module Russell King - ARM Linux admin
     [not found] ` <E1klCB8-0001sW-Ma@rmk-PC.armlinux.org.uk>
2020-12-04 15:00   ` [PATCH net-next 1/2] net: sfp: VSOL V2801F / CarlitoxxPro CPGOS03-0490 v2.0 workaround Russell King - ARM Linux admin
2020-12-04 15:31   ` Andrew Lunn
2020-12-09 11:20     ` Russell King - ARM Linux admin
     [not found] ` <E1klCBD-0001si-Qj@rmk-PC.armlinux.org.uk>
2020-12-04 15:38   ` Andrew Lunn [this message]
2020-12-04 15:51     ` [PATCH net-next 2/2] net: sfp: relax bitrate-derived mode check Russell King - ARM Linux admin
2020-12-09 11:11 ` [PATCH net-next 0/2] Add support for VSOL V2801F/CarlitoxxPro CPGOS03 GPON module Russell King - ARM Linux admin
2020-12-09 11:17   ` Russell King - ARM Linux admin
  -- strict thread matches above, loose matches on Subject: below --
2020-12-09 11:21 [PATCH RESEND " Russell King - ARM Linux admin
2020-12-09 11:22 ` [PATCH net-next 2/2] net: sfp: relax bitrate-derived mode check Russell King

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