Commit 9c3f3410 authored by Trent Piepho's avatar Trent Piepho Committed by David S. Miller
Browse files

dt-bindings: phy: dp83867: Describe how driver behaves w.r.t rgmii delay 



Add a note to make it more clear how the driver behaves when "rgmii" vs
"rgmii-id", "rgmii-idrx", or "rgmii-idtx" interface modes are selected.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarTrent Piepho <tpiepho@impinj.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 74dd5aa1

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

+8 −0
Original line number Diff line number Diff line
@@ -11,6 +11,14 @@ Required properties: 
	- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h

		for applicable values



Note: If the interface type is PHY_INTERFACE_MODE_RGMII the TX/RX clock delays

      will be left at their default values, as set by the PHY's pin strapping.

      The default strapping will use a delay of 2.00 ns.  Thus

      PHY_INTERFACE_MODE_RGMII, by default, does not behave as RGMII with no

      internal delay, but as PHY_INTERFACE_MODE_RGMII_ID.  The device tree

      should use "rgmii-id" if internal delays are desired as this may be

      changed in future to cause "rgmii" mode to disable delays.



Optional property:

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

				    the programmable output impedance to

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