| Message ID | 20230913091011.2808202-2-danishanwar@ti.com |
|---|---|
| State | Accepted |
| Commit | 927c568d62128f48d6646d6df801c1ae25cf139f |
| Headers | show |
| Series | [net-next,v3,1/2] dt-bindings: net: Add documentation for Half duplex support. | expand |
On Wed, 13 Sep 2023 14:40:10 +0530, MD Danish Anwar wrote: > In order to support half-duplex operation at 10M and 100M link speeds, the > PHY collision detection signal (COL) should be routed to ICSSG > GPIO pin (PRGx_PRU0/1_GPI10) so that firmware can detect collision signal > and apply the CSMA/CD algorithm applicable for half duplex operation. A DT > property, "ti,half-duplex-capable" is introduced for this purpose. If > board has PHY COL pin conencted to PRGx_PRU1_GPIO10, this DT property can > be added to eth node of ICSSG, MII port to support half duplex operation at > that port. > > Reviewed-by: Roger Quadros <rogerq@kernel.org> > Signed-off-by: MD Danish Anwar <danishanwar@ti.com> > --- > Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml | 7 +++++++ > 1 file changed, 7 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml index 836d2d60e87d..229c8f32019f 100644 --- a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml +++ b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml @@ -107,6 +107,13 @@ properties: phandle to system controller node and register offset to ICSSG control register for RGMII transmit delay + ti,half-duplex-capable: + type: boolean + description: + Indicates that the PHY output pin COL is routed to ICSSG GPIO pin + (PRGx_PRU0/1_GPIO10) as input so that the ICSSG MII port is + capable of half duplex operations. + required: - reg anyOf: