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: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Link: https://patch.msgid.link/20250228-gianfar-yaml-v2-2-6beeefbd4818@posteo.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml b/Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml
index 22369771c13614875845b6d6e6d6031b933cb152..03c819bc701be4e6bcae37891baccd4b01ec53c4 100644 (file)
--- a/Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml
+++ b/Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml
@@ -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>