net: ethernet: fec: Allow configuration of MDIO bus speed

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MDIO busses typically operate at 2.5MHz. However many devices can
operate at faster speeds. This then allows more MDIO transactions per
second, useful for Ethernet switch statistics, or Ethernet PHY TDR
data. Allow the bus speed to be configured, using the standard
"clock-frequency" property, which i2c busses use to indicate the bus
speed. Before using this property, ensure all devices on the bus do
actually support the requested clock speed.

Suggested-by: Chris Healy <Chris.Healy@zii.aero>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Andrew Lunn 2020-04-20 00:04:01 +02:00 • committed by David S. Miller

parent 29ae6bd1b0

commit 3e782985cb

3 changed files with 15 additions and 3 deletions

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1

Documentation/devicetree/bindings/net/fsl-fec.txt

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6

Documentation/devicetree/bindings/net/mdio.yaml

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11

drivers/net/ethernet/freescale/fec_main.c

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