Commit 0386e29e authored by J. Neuschäfer's avatar J. Neuschäfer Committed by Jakub Kicinski
Browse files

dt-bindings: net: fsl,gianfar-mdio: Update information about TBI 



When this binding was originally written, all known TSEC Ethernet
controllers had a Ten-Bit Interface (TBI). However, some datasheets such
as for the MPC8315E suggest that this is not universally true:

  The eTSECs do not support TBI, GMII, and FIFO operating modes, so all
  references to these interfaces and features should be ignored for this
  device.

Acked-by: default avatarRob Herring (Arm) <robh@kernel.org>
Signed-off-by: default avatarJ. Neuschäfer <j.ne@posteo.net>
Link: https://patch.msgid.link/20250228-gianfar-yaml-v2-2-6beeefbd4818@posteo.net


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e4c45223

Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml

+6 −7
Original line number Diff line number Diff line
@@ -11,13 +11,12 @@ description: 
  connected. For each device that exists on this bus, a child node should be

  created.



  As of this writing, every TSEC is associated with an internal Ten-Bit

  Interface (TBI) PHY. This PHY is accessed through the local MDIO bus. These

  buses are defined similarly to the mdio buses, except they are compatible

  with "fsl,gianfar-tbi". The TBI PHYs underneath them are similar to normal

  PHYs, but the reg property is considered instructive, rather than

  descriptive. The reg property should be chosen so it doesn't interfere with

  other PHYs on the bus.

  Some TSECs are associated with an internal Ten-Bit Interface (TBI) PHY. This

  PHY is accessed through the local MDIO bus. These buses are defined similarly

  to the mdio buses, except they are compatible with "fsl,gianfar-tbi". The TBI

  PHYs underneath them are similar to normal PHYs, but the reg property is

  considered instructive, rather than descriptive. The reg property should be

  chosen so it doesn't interfere with other PHYs on the bus.



maintainers:

  - J. Neuschäfer <j.ne@posteo.net>