From: "Marek Behún" <kabel@kernel.org>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
Andrew Lunn <andrew@lunn.ch>
Subject: Re: [PATCH net-next 5/5] net: sfp: add support for multigig RollBall transceivers
Date: Thu, 29 Oct 2020 17:49:42 +0100 [thread overview]
Message-ID: <20201029174942.6bdf10c4@kernel.org> (raw)
In-Reply-To: <20201029133800.GU1551@shell.armlinux.org.uk>
On Thu, 29 Oct 2020 13:38:00 +0000
Russell King - ARM Linux admin <linux@armlinux.org.uk> wrote:
> Any ideas why it takes 25 seconds for the module to initialise - the
> 88x3310 startup is pretty fast in itself. However, it never amazes me
> how broken SFP modules can be.
I don't know, but for the first 25 seconds the SFP returns 0xffff on
all reads. I think it is due to the internal MCU doing it's own stuff
with the PHY during that time.
Marek
prev parent reply other threads:[~2020-10-29 16:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 22:14 [PATCH net-next 0/5] Support for RollBall 10G copper SFP modules Marek Behún
2020-10-28 22:14 ` [PATCH net-next 1/5] net: phy: mdio-i2c: support I2C MDIO protocol for RollBall " Marek Behún
2020-10-29 12:41 ` Russell King - ARM Linux admin
2020-10-29 12:54 ` Andrew Lunn
2020-10-29 13:41 ` Russell King - ARM Linux admin
2020-10-29 22:53 ` Jakub Kicinski
2020-10-29 22:55 ` Marek Behún
2020-10-29 16:46 ` Marek Behún
2020-10-28 22:14 ` [PATCH net-next 2/5] net: phylink: allow attaching phy for SFP modules on 802.3z mode Marek Behún
2020-10-29 12:08 ` Russell King - ARM Linux admin
2020-10-28 22:14 ` [PATCH net-next 3/5] net: sfp: configure/destroy I2C mdiobus on transceiver plug/unplug Marek Behún
2020-10-29 13:21 ` Russell King - ARM Linux admin
2020-10-28 22:14 ` [PATCH net-next 4/5] net: phy: marvell10g: change MACTYPE if underlying MAC does not support it Marek Behún
2020-10-29 13:21 ` Russell King - ARM Linux admin
2020-10-28 22:14 ` [PATCH net-next 5/5] net: sfp: add support for multigig RollBall transceivers Marek Behún
2020-10-29 13:38 ` Russell King - ARM Linux admin
2020-10-29 16:49 ` Marek Behún [this message]
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