[PATCH net-next v2 1/3] dt-bindings: net: ethernet-phy: add property tx-amplitude-100base-tx-gain-milli

[Dimitri Fedrau via B4 Relay]

From: Dimitri Fedrau <dimitri.fedrau@xxxxxxxxxxxx>

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
+      omitted, the PHYs default will be left as is. If not present, default to
+      1000 (no actual gain applied).
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 1000
+
   leds:
     type: object
 

-- 
2.39.5