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Date:   Thu, 29 Oct 2020 17:49:42 +0100
From:   Marek BehĂșn <>
To:     Russell King - ARM Linux admin <>
        Andrew Lunn <>
Subject: Re: [PATCH net-next 5/5] net: sfp: add support for multigig
 RollBall transceivers

On Thu, 29 Oct 2020 13:38:00 +0000
Russell King - ARM Linux admin <> 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.


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