[PATCH v2 2/3] dt-bindings: net: fsl,gianfar-mdio: Update information about TBI

From: J. Neuschäfer via B4 Relay
Date: Fri Feb 28 2025 - 12:33:22 EST


From: "J. Neuschäfer" <j.ne@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: J. Neuschäfer <j.ne@xxxxxxxxxx>
---

V2:
- Add Rob's Acked-by tag
---
Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

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

--
2.48.0.rc1.219.gb6b6757d772