netdev - [PATCH net-next 2/3] dt-bindings: net: renesas-gbeth: Add port-id property

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Message-ID: <20251204164028.7321-3-john.madieu.xa@bp.renesas.com>
Date: Thu,  4 Dec 2025 17:40:27 +0100
From: John Madieu <john.madieu.xa@...renesas.com>
To: prabhakar.mahadev-lad.rj@...renesas.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	geert+renesas@...der.be
Cc: biju.das.jz@...renesas.com,
	claudiu.beznea@...on.dev,
	linux@...linux.org.uk,
	magnus.damm@...il.com,
	mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com,
	netdev@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	John Madieu <john.madieu.xa@...renesas.com>
Subject: [PATCH net-next 2/3] dt-bindings: net: renesas-gbeth: Add port-id property

Add optional port-id property to identify ethernet ports on RZ/V2H
SoCs. The hardware doesn't provide unique identification registers
for multiple ethernet instances, so this property allows explicit
port identification from the device tree.

Signed-off-by: John Madieu <john.madieu.xa@...renesas.com>
---
 .../bindings/net/renesas,rzv2h-gbeth.yaml     | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/renesas,rzv2h-gbeth.yaml b/Documentation/devicetree/bindings/net/renesas,rzv2h-gbeth.yaml
index bd53ab300f500..bb59c6a925d3f 100644
--- a/Documentation/devicetree/bindings/net/renesas,rzv2h-gbeth.yaml
+++ b/Documentation/devicetree/bindings/net/renesas,rzv2h-gbeth.yaml
@@ -117,6 +117,23 @@ properties:
           - description: AXI power-on system reset
           - description: AHB reset
 
+  renesas,port-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Optional unique port identifier for this ethernet interface.
+      Used for physical port identification (phys_port_id, phys_port_name).
+      If not specified, the ethernet alias index is used as fallback.
+    minimum: 0
+    maximum: 255
+
+  renesas,port-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Optional custom name for the physical port. Used by
+      ndo_get_phys_port_name() for interface naming.
+      If not specified, "p<N>" format is used where N is the port-id
+      or ethernet alias index.
+
   pcs-handle:
     description:
       phandle pointing to a PCS sub-node compatible with
@@ -230,6 +247,8 @@ examples:
         snps,txpbl = <32>;
         snps,rxpbl = <32>;
         phy-handle = <&phy0>;
+        renesas,port-id = <0>;
+        renesas,port-name = "mgmt";
 
         stmmac_axi_setup: stmmac-axi-config {
             snps,lpi_en;
-- 
2.25.1