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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc 
 kernel/Documentation/ABI/testing/sysfs-bus-mdio
....@@ -1,29 +1,63 @@
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-What:		/sys/bus/mdio_bus/devices/.../phy_id
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-Date:		November 2012
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-KernelVersion:	3.8
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-Contact:	netdev@vger.kernel.org
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+What:          /sys/bus/mdio_bus/devices/.../statistics/
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
55 Description:
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-		This attribute contains the 32-bit PHY Identifier as reported
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-		by the device during bus enumeration, encoded in hexadecimal.
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-		This ID is used to match the device with the appropriate
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-		driver.
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+		This folder contains statistics about global and per
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+		MDIO bus address statistics.
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-What:		/sys/bus/mdio_bus/devices/.../phy_interface
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-Date:		February 2014
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-KernelVersion:	3.15
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-Contact:	netdev@vger.kernel.org
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+What:          /sys/bus/mdio_bus/devices/.../statistics/transfers
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
1513 Description:
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-		This attribute contains the PHY interface as configured by the
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-		Ethernet driver during bus enumeration, encoded in string.
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-		This interface mode is used to configure the Ethernet MAC with the
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-		appropriate mode for its data lines to the PHY hardware.
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+		Total number of transfers for this MDIO bus.
2015 
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-What:		/sys/bus/mdio_bus/devices/.../phy_has_fixups
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-Date:		February 2014
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-KernelVersion:	3.15
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-Contact:	netdev@vger.kernel.org
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+What:          /sys/bus/mdio_bus/devices/.../statistics/errors
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
2520 Description:
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-		This attribute contains the boolean value whether a given PHY
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-		device has had any "fixup" workaround running on it, encoded as
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-		a boolean. This information is provided to help troubleshooting
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-		PHY configurations.
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+		Total number of transfer errors for this MDIO bus.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/writes
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of write transactions for this MDIO bus.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/reads
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of read transactions for this MDIO bus.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/transfers_<addr>
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of transfers for this MDIO bus address.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/errors_<addr>
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of transfer errors for this MDIO bus address.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/writes_<addr>
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of write transactions for this MDIO bus address.
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+
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+What:          /sys/bus/mdio_bus/devices/.../statistics/reads_<addr>
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+Date:          January 2020
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+KernelVersion: 5.6
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+Contact:       netdev@vger.kernel.org
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+Description:
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+		Total number of read transactions for this MDIO bus address.