From: Dan Murphy <dmurphy@ti.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: <davem@davemloft.net>, <f.fainelli@gmail.com>,
<hkallweit1@gmail.com>, <mkubecek@suse.cz>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries
Date: Tue, 15 Sep 2020 18:26:34 -0500 [thread overview]
Message-ID: <bfe1a5fa-2092-7aa8-db24-86306042d3fc@ti.com> (raw)
In-Reply-To: <20200915201014.GC3526428@lunn.ch>
Andrew
On 9/15/20 3:10 PM, Andrew Lunn wrote:
> On Tue, Sep 15, 2020 at 01:17:06PM -0500, Dan Murphy wrote:
>> @@ -160,6 +160,8 @@ static const struct phy_setting settings[] = {
>> PHY_SETTING( 100, FULL, 100baseT_Full ),
>> PHY_SETTING( 100, FULL, 100baseT1_Full ),
>> PHY_SETTING( 100, HALF, 100baseT_Half ),
>> + PHY_SETTING( 100, HALF, 100baseFX_Half ),
>> + PHY_SETTING( 100, FULL, 100baseFX_Full ),
> Hi Dan
>
> Does 100baseFX_Half make an sense? My understanding of 802.3 section
> 26 is that it is always a pair, not a single fibre where you might
> need CSMA/CD?
I actually questioned that too and looked it up
I found these and thought they could be viable
http://www.certiology.com/tech-terms/network/100base-fx.html
"The 100Base-FX can be used in a maximum length of 412 meters if being
used in
half-duplex connections or as 2 kilometer lengths in the case of
full-duplex transmissions over optical fiber."
https://www.cnet.com/products/half-duplex-100basefx-interface-pb7/
Of course I never have seen one myself
Dan
> Andrew
next prev parent reply other threads:[~2020-09-15 23:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 18:17 [PATCH net-next 0/3] 100base Fx link modes Dan Murphy
2020-09-15 18:17 ` [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries Dan Murphy
2020-09-15 20:10 ` Andrew Lunn
2020-09-15 23:26 ` Dan Murphy [this message]
2020-09-15 20:21 ` Andrew Lunn
2020-09-15 23:29 ` Dan Murphy
2020-09-17 15:03 ` Dan Murphy
2020-09-15 18:17 ` [PATCH net-next 2/3] net: dp83869: Add ability to advertise Fiber connection Dan Murphy
2020-09-15 20:17 ` Andrew Lunn
2020-09-16 20:54 ` Dan Murphy
2020-09-16 22:13 ` Andrew Lunn
2020-09-17 14:57 ` Dan Murphy
2020-09-15 18:17 ` [PATCH net-next 3/3] net: phy: dp83822: Update the fiber advertisement for speed Dan Murphy
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