On Mon, Jan 20, 2025 at 02:50:21PM +0100, Dimitri Fedrau wrote: > Add property tx-amplitude-100base-tx-gain-milli in the device tree bindings > for configuring the tx amplitude of 100BASE-TX PHYs. Modifying it can be > necessary to compensate losses on the PCB and connector, so the voltages > measured on the RJ45 pins are conforming. > > Signed-off-by: Dimitri Fedrau <dimitri.fedrau@xxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/net/ethernet-phy.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml > index 2c71454ae8e362e7032e44712949e12da6826070..ce65413410c2343a3525e746e72b6c6c8bb120d0 100644 > --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml > +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml > @@ -232,6 +232,14 @@ properties: > PHY's that have configurable TX internal delays. If this property is > present then the PHY applies the TX delay. > > + tx-amplitude-100base-tx-gain-milli: > + description: | > + Transmit amplitude gain applied (in milli units) for 100BASE-TX. When milli is unit prefix, not the unit. What is the unit? percentage? basis point? > + omitted, the PHYs default will be left as is. If not present, default to > + 1000 (no actual gain applied). Don't repeat constraints in free form text. Best regards, Krzysztof
