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Commit d6081de7 authored by Mugunthan V N's avatar Mugunthan V N Committed by David S. Miller
Browse files

net: phy: dp83867: Add documentation for optional impedance control 



Add documention of ti,min-output-impedance and ti,max-output-impedance
which can be used to correct MAC impedance mismatch using phy extended
registers.

Signed-off-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 403f0727

Documentation/devicetree/bindings/net/ti,dp83867.txt

+12 −0
Original line number Diff line number Diff line
@@ -9,6 +9,18 @@ Required properties: 
	- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h

		for applicable values



Optional property:

	- ti,min-output-impedance - MAC Interface Impedance control to set

				    the programmable output impedance to

				    minimum value (35 ohms).

	- ti,max-output-impedance - MAC Interface Impedance control to set

				    the programmable output impedance to

				    maximum value (70 ohms).



Note: ti,min-output-impedance and ti,max-output-impedance are mutually

      exclusive. When both properties are present ti,max-output-impedance

      takes precedence.



Default child nodes are standard Ethernet PHY device

nodes as described in Documentation/devicetree/bindings/net/phy.txt