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From: Dan Murphy <dmurphy@ti.com>
To: <andrew@lunn.ch>, <f.fainelli@gmail.com>, <hkallweit1@gmail.com>,
	<bunk@kernel.org>
Cc: <netdev@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <grygorii.strashko@ti.com>,
	Dan Murphy <dmurphy@ti.com>
Subject: [PATCH net-master 0/1] DP83867 Speed optimization feature
Date: Fri, 31 Jan 2020 09:11:09 -0600	[thread overview]
Message-ID: <20200131151110.31642-1-dmurphy@ti.com> (raw)

Hello

Speed optimization, also known as link downshift, enables fallback to 100M
operation after multiple consecutive failed attempts at Gigabit link
establishment. Such a case could occur if cabling with only four wires
were connected instead of the standard cabling with eight wires.
Speed optimization also supports fallback to 10M if link establishment fails
in Gigabit and in 100M mode.

Speed optimization can be enabled via strap or via register configuration.
The 48 pin devices do not have the ability to strap this feature and the PHY
team suggested to enable this bit for all use cases.

Dan

Dan Murphy (1):
  net: phy: dp83867: Add speed optimization feature

 drivers/net/phy/dp83867.c | 48 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

-- 
2.25.0


             reply	other threads:[~2020-01-31 15:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-31 15:11 Dan Murphy [this message]
2020-01-31 15:11 ` [PATCH net-master 1/1] net: phy: dp83867: Add speed " Dan Murphy
2020-01-31 17:10   ` Jakub Kicinski
2020-01-31 17:14     ` Dan Murphy
2020-01-31 18:11       ` Jakub Kicinski
2020-01-31 18:36         ` Dan Murphy
2020-01-31 17:49   ` Florian Fainelli
2020-01-31 18:29     ` Dan Murphy
2020-01-31 18:42       ` Florian Fainelli
2020-01-31 19:14         ` Dan Murphy
2020-01-31 19:29           ` Florian Fainelli
2020-01-31 19:54             ` Dan Murphy
2020-01-31 20:02               ` Florian Fainelli
2020-01-31 20:10                 ` Dan Murphy
2020-01-31 20:56   ` Heiner Kallweit
2020-02-01  1:30     ` Dan Murphy
2020-02-01  4:57       ` Florian Fainelli

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